Do All These Secret Features Really Work?

Bright Side

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Transcript

00:00:00 Have you ever stopped to think about the thrilling secrets of day-to-day modern life

00:00:06 on planet Earth?

00:00:07 I'm talking about tiny windows in washing machines, and little holes in airplane windows.

00:00:14 If you haven't got a clue of what I'm talking about, tag along and allow yourself

00:00:18 to be as surprised as I was when I found out!

00:00:23 Remember the drawer at the bottom of your oven?

00:00:26 Maybe you've been ignoring it all along or using it to store pots and pans.

00:00:30 Well, even though it can serve this function, that's not the only thing it's there for.

00:00:36 The best way to use the bottom drawer is to keep your meal heated while you're waiting

00:00:40 to serve it.

00:00:41 Genius, right?

00:00:44 Talking about secret doors, have you noticed that most washing machines have little flap

00:00:49 doors at the bottom too?

00:00:51 These doors actually serve as drain traps.

00:00:54 It's where all the items that we put to wash together with our jeans and jackets go

00:00:58 to.

00:00:59 It's a type of collector, let's say, of small items.

00:01:03 It stops them from getting into the main drain pipes and clogging them.

00:01:07 It saves us hundreds of dollars in repairs each month.

00:01:12 Now, who hasn't gone through the confusing task of having to measure how much pasta to

00:01:18 cook for one serving?

00:01:19 Well, here's the solution – the holes in the center of pasta spoons.

00:01:25 They were actually made for measuring the exact amount of dry pasta you need for one

00:01:29 serving.

00:01:31 If you try stuffing wet cooked pasta through it, well, good luck with that.

00:01:37 On a similar topic, have you ever wondered why pen caps have holes in them?

00:01:42 Maybe you thought it was a design feature to regulate air pressure.

00:01:46 But in reality, these holes have a much simpler and more important function – to reduce

00:01:51 the risk of choking.

00:01:53 Lots of people love to bite on their caps, and this tiny hole prevents them from choking

00:01:59 in case they accidentally swallow a cap and it gets stuck in their throat.

00:02:04 For kitchen lovers, there's a hidden secret right in front of your eyes that can change

00:02:08 your life.

00:02:10 Think pans, now think handles.

00:02:12 Right, they have holes in them!

00:02:15 As it turns out, these holes were designed to hold the spoon you're using for cooking.

00:02:20 And instead of dripping sauce all over the stove or your kitchen floor, you can place

00:02:25 the spoon in the hole and let it drip the sauce directly back into the pan.

00:02:32 Speaking of everyday items, and I was, most doorknobs are made of brass because this material

00:02:39 makes them naturally germ-free.

00:02:42 Unlike plastic ones, brass doorknobs are kind of magical.

00:02:46 They can disinfect themselves without you having to clean them.

00:02:50 Neat, right?

00:02:52 Have you ever noticed that at the bottom of a measuring tape, there is a little dip?

00:02:57 You can find it in that metallic part you need to pull on to measure something.

00:03:02 Well, that dip is actually the exact size of a regular nail.

00:03:07 It was designed for people to place the tape on top of a nail and use it as a support while

00:03:12 they stretch the tape.

00:03:13 Well, I can't wait to try it out for myself!

00:03:18 As for the margins in your notebook, they were invented to protect people's notes

00:03:22 from mice.

00:03:24 No, the mice weren't copying your answers for the math quiz.

00:03:28 Actually, there were times when people had to cohabitate with rats and mice that often

00:03:34 chewed on paper.

00:03:36 So to prevent information from getting completely lost, people created margins.

00:03:42 This way, texts were moved closer to the middle of pages and remained unharmed by rodents.

00:03:48 Hmm, perhaps this is where "to digest information" came from.

00:03:54 And what about those tiny holes at the bottom of airplane windows?

00:03:59 They have an extremely important function of regulating the air pressure inside the

00:04:03 cabin.

00:04:05 In other words, they help planes fly high up in the sky.

00:04:09 Big responsibility, right?

00:04:12 By the way, tray tables on an airplane are the germiest places inside the entire cabin.

00:04:18 Studies showed that the trays had 8 times the amount of germs on the toilet flush button.

00:04:25 Now how about we cut a commercial airplane in half and see what's inside?

00:04:31 Well, it would look more or less like this – rows of seats on top and everything else

00:04:36 that needs to be stored at the bottom.

00:04:39 I'm talking about passengers' luggage, emergency supplies, parts of the wing system,

00:04:44 and so on.

00:04:47 Moving on to bowling balls!

00:04:48 Yes, I know it's a clumsy transition.

00:04:52 Anyway, have you ever wondered what the insides of a bowling ball look like?

00:04:57 If you have cut a professional ball in two, you'll see a familiar shape.

00:05:02 Look closely, do you see it?

00:05:04 Doesn't that look like the logo of Brightside?

00:05:07 Anyway, professional bowling balls are different from the ones in your local bowling alley.

00:05:12 That's because they're designed to make fancy moves.

00:05:16 They actually have some really complex engineering inside.

00:05:19 They're shaped to help skilled professionals get more strikes.

00:05:23 The weight of professional bowling balls is designed to be projected inward as they travel

00:05:28 down the bowling lane.

00:05:30 This makes it harder for them to get into the gutters on the sides of the lane.

00:05:35 Speaking of balls, let's take a look inside a baseball.

00:05:39 To make it light and aerodynamic, producers use several different layers.

00:05:45 Starting from the core, we have a cork center enveloped by black rubber.

00:05:50 Then there's a layer of red rubber, followed by two or three alternating layers of wool

00:05:55 yarn.

00:05:56 After that, there's a visible white leather cover and that beautiful red seam on the side,

00:06:02 stitching it all together.

00:06:04 And what if you had X-ray vision and managed to look inside a human bone?

00:06:10 Ooh, spooky!

00:06:12 I'd say what calls most attention is this spiderweb-like situation at the center of

00:06:17 the ball.

00:06:18 In reality, it's a highly condensed and complex structure of nerves that you have

00:06:23 inside your bones.

00:06:25 Aren't you lucky?

00:06:27 Now I've got a riddle for you.

00:06:29 What is round, can be found near the ocean, and looks like an aerial view of the Guggenheim

00:06:35 Museum in New York City.

00:06:37 The one that's made almost entirely of ramps.

00:06:40 If you said a nautilus shell, then you guessed right!

00:06:44 A nautilus is a shellfish whose house you can find in countless souvenir stores near

00:06:49 the beach.

00:06:50 It's made up of two layers – a matte white outer layer and an iridescent white inner

00:06:56 layer.

00:06:57 And if you were to cut it in half, it would look very similar to the insides of the Guggenheim

00:07:02 Museum.

00:07:05 Aloe leaves are good for healing purposes and also for hydration.

00:07:09 But if you managed to look inside of an aloe leaf, the image you'd see would be satisfying

00:07:15 and very relaxing.

00:07:17 Who hasn't dreamed of a pool filled with jelly?

00:07:22 There seems to be nothing more mundane and regular than a tube of toothpaste.

00:07:27 But you wouldn't think so if you cut open a tube that contains several colors.

00:07:32 There have been speculations that the insides of such a toothpaste tube might be divided

00:07:37 by barriers so that the stripes don't mix.

00:07:41 But if you cut it in half, you'll see that it has only one interior chamber.

00:07:47 As it happens, there's a lot of science behind the making of striped toothpaste.

00:07:52 According to a specialist, they have to ensure that the paste in all the stripes has the

00:07:57 same physical properties.

00:07:59 This way, the colors are naturally prevented from mixing with one another.

00:08:03 That's why, if you tear a tube open, you'll see something that looks like several slices

00:08:08 of pizza in different colors.

00:08:11 If you open your closet, you're bound to find at least a few wooden hangers.

00:08:16 Usually they're made of cedar wood, which is a natural moth repellent.

00:08:21 So cedar hangers actually protect your clothes from moth infestation.

00:08:26 For some people, more than others, eyeliner is an everyday must.

00:08:31 Boy, isn't it?

00:08:32 But did you know that back in ancient Egyptian times, both men and women used coral eyeliners

00:08:39 to protect their eyes from the sun's glare?

00:08:41 Way to go for the Egyptians for figuring that out!

00:08:45 Now if I could just learn to walk like one…

00:08:48 Normally, we use headrests for the purpose of, well, resting our heads, right?

00:08:55 Well, not only!

00:08:57 As it turns out, headrests can be easily removed from the seats and used to break car windows

00:09:03 in case of emergencies.

00:09:06 Now this one is a trick very few people know about.

00:09:09 You probably place your doormat horizontally like most of us do.

00:09:14 But doormats serve the purpose of absorbing dirt from the soles of your shoes before you

00:09:19 enter your home.

00:09:20 So for this function to work as it's meant to, the best way to place a doormat is vertically.

00:09:27 This way, you take more steps on the top of the doormat before entering your house.

00:09:33 And last but not least, I don't want to be accusatory here, but you have probably

00:09:39 been vacuuming your house the wrong way, and I can prove it.

00:09:44 Most people just vacuum floors and carpets in one direction or move the brush back and

00:09:49 forth several times, thinking they've got all the dust out.

00:09:53 But according to cleaning professionals, the best way to vacuum is in rows.

00:09:58 First you go forward with the brush until you arrive at the end of the row.

00:10:02 Then you fluff the carpet up and move back down along the same row, gathering the dust

00:10:08 that wasn't collected in the first sweep.

00:10:10 Talk about efficient cleaning!

00:10:12 On the other hand, my idea of housecleaning is to sweep the room with a glance.

00:10:18 Hey, I don't want to disturb that protective layer of dust.

00:10:25 Many shirts have two buttons on the cuffs, but only one buttonhole.

00:10:29 So what is the second button for?

00:10:32 Turns out you can use it whenever you're wearing a watch, so the cuff is looser.

00:10:38 Most clothing items you buy come with a small bag of fabric or a button, or both.

00:10:44 Buttons obviously can be used as a replacement if you lose the original ones.

00:10:49 Pieces of fabric can be used to patch up a hole, but most importantly, it's a tester.

00:10:54 You can use it to test different washing products on it and see what happens to the fabric.

00:11:01 Some umbrellas have a tip at the top, and it turns out it's not just a pretty design.

00:11:07 When going inside on a rainy day, you should just close your umbrella and tap the tip against

00:11:12 the floor to drain the water faster and more effectively.

00:11:17 Many backpacks have this diamond with two parallel cutout slits on its front, and it's

00:11:22 there for your comfort.

00:11:24 You can attach something to it, like a water bottle or shoes.

00:11:28 It comes especially handy if you travel somewhere or go hiking, so you don't have to hold

00:11:33 your stuff.

00:11:35 Okay, the next thing is gear loops, and probably from the name of it, you already have an idea

00:11:41 what they're there for.

00:11:43 You can strap in some useful gear you need to have with you, like trekking poles or shovels.

00:11:49 Some gear will need to be secured to do it.

00:11:51 Drop the handle through the loop and rotate it upward.

00:11:54 Then, secure it with the elastic hook at the top, and you're golden.

00:12:00 On the back of many makeup and hygiene products, you can find this symbol with a marking, like

00:12:05 6M, 12M, and 24M.

00:12:10 This is the number of months this product can serve after you open it and before you

00:12:15 should throw it out.

00:12:17 The two sides of a cotton pad are different because each of them has a particular purpose.

00:12:23 A cotton pad has several layers to ensure that it's soft, strong, and can absorb liquids.

00:12:30 The edge is stitched to hold it all together.

00:12:33 The smooth side of a pad is for applying products, like tonics and lotions, and the embossed

00:12:39 side is best for cleansing and makeup removal.

00:12:42 Also, any pack of cotton pads has those strings on the sides.

00:12:47 They're there so you can hang the package somewhere.

00:12:50 Then, you can open the package at the bottom, where the perforated line is, and take them

00:12:55 out.

00:12:57 Did you know that there is an efficient way to pull a thread from yarn?

00:13:01 When you pull from the outside, the yarn rolls away, so you need to hold it.

00:13:06 However, if you pull it from the center, it will stay together.

00:13:11 We're all familiar with staplers, but I bet you don't know all its secrets.

00:13:16 Most staplers have a compartment to store spare staples, which can be located either

00:13:21 on top or at the bottom.

00:13:23 Also, surprise!

00:13:25 This metal plate you press staples against can be turned around.

00:13:29 This way, the device will be able to staple your documents by turning the metal ends outwards.

00:13:36 No need to wonder whether you need to get a smaller or bigger container.

00:13:40 Turns out, plastic food containers have volume measurements on their bottoms, indicating

00:13:44 how much food they can fit.

00:13:48 Ceiling fans come with a small switch on the inside of the blade.

00:13:52 You might not have noticed it because it's not in plain sight, so check yours out.

00:13:57 This switch allows you to change the direction of rotation.

00:14:00 Now, why would you want to do that?

00:14:03 The blades of a fan push the air in different directions, depending on the way they rotate.

00:14:09 In the summer, you need the air to be pushed down to create the effect of a breeze.

00:14:15 In the winter, the direction should be changed so that the air is pushed towards the ceiling.

00:14:20 It then heats up before going down the walls.

00:14:25 Have you noticed that the gas tank sign on cars' dashboards has a little arrow next

00:14:30 to it?

00:14:31 Well, this arrow has a purpose.

00:14:34 It points at the side of the car where the gas tank is located.

00:14:38 It's very useful for forgetful people who constantly wonder where their gas tank is

00:14:42 and also for those who drive rentals once in a while.

00:14:45 The answer is right in front of your eyes.

00:14:48 If you can't find the arrow on your panel, then the fuel hose on the icon indicates the

00:14:53 side instead.

00:14:57 All car tires have 12-digit numbers printed on them, and they're actually important

00:15:01 codes for car owners if they want to get the right tire.

00:15:05 The first letter identifies the type of tire.

00:15:09 P stands for a tire for light passenger cars, and LT is for heavy vehicles.

00:15:15 Then the following numbers stand for the width of the tire, its radial, and its diameter.

00:15:23 Marking tapes have that metal stud on the end, which you can use to attach the tape

00:15:27 to the surface you measure.

00:15:29 This way, you don't need to hold it yourself.

00:15:32 But there's also a small slot, which can be used to hang the tape on a nail, again

00:15:37 to free your hands and keep measuring.

00:15:41 The bottom of the end of the tape has a ridged edge.

00:15:44 It will help you make a mark if you don't have a marking tool with you.

00:15:49 On the tape, there are black diamonds that are placed every 19.2 inches.

00:15:55 They're useful for construction workers when spacing engineering joists.

00:16:00 They can also be useful for you if you want to hang something heavy, for example.

00:16:04 The diamond will mark the exact center of a wooden joist.

00:16:08 Those are placed 16 inches apart from one another.

00:16:11 There, you can drill something to that center to make sure whatever you hang is safely attached

00:16:17 to the joist instead of the unreliable thin wall.

00:16:21 Pictures will survive, but it's particularly important if you're hanging something heavy.

00:16:27 Did you know that batteries have an expiration date?

00:16:31 Yes, it's printed right on their label, but I've never noticed it before.

00:16:36 The expiration date doesn't mean you can't use it after that.

00:16:40 It's more like a recommended usage period, after which the manufacturer can't guarantee

00:16:46 full battery life due to deteriorated components.

00:16:52 These little feet keyboards have are actually a standard.

00:16:57 The height of a keyboard should be adjustable, allowing the angle between 0 degrees and 15

00:17:03 degrees.

00:17:04 The reason to fold the feet out is for you to see the keys better, in case you don't

00:17:10 type blindly.

00:17:12 A little problem that comes with it is that, in this case, your wrists are bent, and it's

00:17:18 not good to keep them in this position for a long time.

00:17:23 Pans have those holes on the ends of their handles.

00:17:26 They're not just there for you to hang them.

00:17:29 You can also place your cooking spoon in there.

00:17:32 It'll hang right above the pan, and the sauce will not spill around.

00:17:38 Make sure to tap off the sauce or food beforehand though, so that it doesn't go down the spoon's

00:17:44 handle.

00:17:46 Stickers with numbers you can find on fruits can tell you some information on how the food

00:17:52 was grown.

00:17:54 A four-digit code that starts with a "4" means that the fruit was grown conventionally,

00:18:01 meaning it contains chemicals and pesticides.

00:18:04 So your best choice should be a fruit with a five-digit number.

00:18:09 And if you see the number "9", it indicates that the fruit is certified organic.

00:18:16 On the bottom of plastic bottles, you can often notice a mark of a triangle with a number

00:18:22 engraved in the middle.

00:18:25 This number specifies the type of plastic that was used to produce the bottle.

00:18:31 These codes help people and local recycling centers to sort returns.

00:18:37 Products that were made of plastic of types 1 and 2 are the easiest ones to recycle.

00:18:44 Plastics of types 3 through 7 are tougher to recycle.

00:18:51 I bet that's not what you imagine when you think of cashews.

00:18:54 But a Redditor found them like this in a store in Brazil.

00:18:57 It turns out they're not true nuts.

00:19:00 Cashews emerge at the tip of a cashew apple.

00:19:03 There's a special word for a fruit with a seed inside, a droop.

00:19:06 So cashews are droops, just like almonds and pistachios.

00:19:11 Brazil is the homeland of cashews.

00:19:13 The tree was brought to India by the Portuguese in the middle of the 16th century, and from

00:19:18 there it spread further to Asia and then to West Africa.

00:19:22 Today, these regions are the largest producers of cashews.

00:19:26 The biggest consumer is the USA.

00:19:29 They get 90% of the world's harvest.

00:19:32 Since we're talking about foods, I'll show you a couple more.

00:19:36 This for example is how pineapples grow.

00:19:38 Also, pineapples aren't one of those fruits that grow fast.

00:19:42 They take from 16 up to 24 months to grow until they can be harvested.

00:19:46 Also, one plant can only produce a maximum of three pineapples during its lifetime.

00:19:52 Fun facts.

00:19:53 Every segment of a pineapple used to be a flower.

00:19:56 Have you ever wondered why eggplants are called eggplants?

00:19:59 Well, you've probably never seen an eggplant growing, so here's a picture.

00:20:04 Now it makes sense.

00:20:05 They literally look like growing eggs.

00:20:07 Also, eggplants aren't vegetables.

00:20:10 Botanically, they're berries, just like watermelons.

00:20:13 Also, eggplants aren't only purple.

00:20:16 They can also be white, green, and even purple with white stripes.

00:20:21 You'll never guess what it is.

00:20:23 It looks like a flower bouquet.

00:20:25 But it's broccoli that hasn't been harvested.

00:20:27 Those flowers are actually edible.

00:20:30 Broccoli has been known for at least 2,000 years.

00:20:33 It was the favorite food of the ancient Romans.

00:20:35 But it appeared in North America only in the 1920s.

00:20:39 Italian immigrants were the ones to bring it to California and start selling it.

00:20:43 Now, the USA is the third largest producer of broccoli, after China and India.

00:20:49 And this is what an artichoke turns into if you let it bloom.

00:20:53 So an artichoke is actually an unbloomed flower.

00:20:57 It's also one of the oldest foods humans know.

00:21:00 Remember that a pineapple takes around two years to produce a fruit.

00:21:04 And a plant can only carry three pineapples during its life, if you're lucky.

00:21:08 An artichoke plant grows 20 artichokes per year.

00:21:12 The artichoke is one of the healthiest vegetables when it comes to antioxidants.

00:21:17 Here's a photo of a sleeping turtle.

00:21:19 Many of them sleep inside their shells.

00:21:21 It's an instinct to protect themselves from predators.

00:21:24 Still, some turtles can't retract to their shells, so they sleep in positions similar

00:21:29 to this one.

00:21:30 These animals are active during the day and sleep at night.

00:21:33 The amount of sleep a turtle needs depends on the species.

00:21:36 It can be from 10 hours to just one.

00:21:39 On average, a turtle takes a four to six-hour-long nap.

00:21:42 The most important factor for a turtle when it goes to sleep is to find a safe place.

00:21:47 They can hide under leaves or in holes in the ground.

00:21:51 Have you ever seen a chameleon's feet?

00:21:53 You're welcome.

00:21:54 So, those guys have two toes on the inner side of the foot and three on the outer side

00:21:59 when we talk about front feet.

00:22:01 And it's the opposite for the back feet.

00:22:04 Chameleons live on trees, and their feet help them climb better.

00:22:07 We all know about chameleons' unique ability to change colors.

00:22:11 But they don't change them to camouflage.

00:22:13 In reality, the color depends on the chameleon's mood, temperature, humidity, and light.

00:22:19 Also, do you know that some of them have tongues that are twice as long as their body?

00:22:25 Ever seen a goose mouth from up close?

00:22:28 They have teeth.

00:22:29 Only they're called beaks.

00:22:32 Goose are very loyal creatures.

00:22:33 It's not a myth that a duckling bonds with the first moving stimulus they see after hatching.

00:22:38 No matter if it's a goose, a person, or even just an object, they will stay dedicated to

00:22:43 that lucky creature or thing throughout their lives.

00:22:46 Goose also mate for life, and they're very protective of their offspring.

00:22:50 If they lose a loved one, they mourn them.

00:22:52 Also, if a goose in a group gets sick or wounded, a couple of other geese will stay with it

00:22:57 to protect and take care of it.

00:23:00 This cute little buddy is a newborn alligator.

00:23:03 But don't be tricked by its cute appearance.

00:23:05 This little dude has around 60 teeth already.

00:23:08 Also, it's not the DNA that determines the gender of an alligator.

00:23:12 It's the temperature.

00:23:14 If eggs were laid when it was hot, male alligators will hatch.

00:23:18 If they stayed in colder temperatures, then there will be a bunch of females.

00:23:22 After hatching, it takes an alligator 10 years to mature.

00:23:26 Overall, alligators live around 35 years in the wild.

00:23:30 Also, alligators can't live in salt water.

00:23:32 Unlike crocodiles, they don't have special glands to excrete salt from their bodies.

00:23:38 And this one is a newborn pigeon.

00:23:40 I bet you've seen thousands of pigeons in your life, but probably never a newborn one.

00:23:45 That's because newborn pigeons stay in the nest for around six weeks, which is longer

00:23:50 than any other bird.

00:23:51 By the time they're out, they almost look like grown-up pigeons, so no wonder you've

00:23:55 never noticed the difference.

00:23:57 Also, these guys are possibly the first birds domesticated by people.

00:24:02 They are also experts in navigation.

00:24:04 They can find their way back home from 1,300 miles afar.

00:24:08 It's more than the distance between New York and Florida.

00:24:11 It's believed that pigeons have an innate sense of direction.

00:24:14 Back in ancient times, pigeons actually delivered mail.

00:24:18 This is a cow's mouth.

00:24:20 Those brushes are called conical papillae.

00:24:22 They help a cow move food around in the mouth.

00:24:25 Also, cows have a field of vision of 330 degrees.

00:24:29 So there's little that can skip their attention.

00:24:31 Remember that some turtles only need one hour of sleep a day?

00:24:35 Some sleep even less, around 30 minutes a day.

00:24:38 And this time is divided into six to 10 short periods of deep sleep.

00:24:42 These animals lie down for around 10 hours a day.

00:24:45 But the rest of the time, they move around, covering quite long distances.

00:24:48 And yeah, they also drink around 26 gallons of water a day.

00:24:54 Can you guess what this is?

00:24:56 It's sand under 300 times magnification.

00:24:59 Sand is rock broken into micro pieces after eroding after millions of years.

00:25:04 Also, communities of microbes live on a single grain of sand.

00:25:08 Things can get really small in this world.

00:25:10 Even though there's a lot of it, sand is still a valuable material.

00:25:14 Concrete is made out of it.

00:25:16 And also, some countries, like the United Arab Emirates in Singapore,

00:25:20 have shipped tons of sand to extend their territory

00:25:23 by creating additional islands.

00:25:26 Apparently, this is what sinuses look like.

00:25:29 They're hollow spaces in your facial bones,

00:25:31 behind the forehead, nose, cheekbones, and between the eyes.

00:25:35 Those are very important, since they produce mucus,

00:25:38 which is a fluid in your nose that filtrates, warms, and moisturizes

00:25:42 the air you breathe in.

00:25:43 Sinuses also help you detect tastes.

00:25:46 Without this ability, the food would be way less delicious.

00:25:50 This is the inside of a bowling ball.

00:25:52 You may notice that it isn't symmetrical inside.

00:25:55 So the weight isn't distributed evenly.

00:25:57 This allows the ball to make curves.

00:26:00 By the way, do you know that bowling appeared 5,000 years ago

00:26:03 in ancient Egypt?

00:26:05 Yep, it's not a new sport, and it was popular all over the world.

00:26:09 The rules and equipment were different everywhere, though.

00:26:11 The first bowling lane was constructed only in the 19th century, in New York.

00:26:16 This right here is a forgotten pack of cotton candy.

00:26:19 Bottom line, don't forget about it.

00:26:21 Otherwise, it'll shrink as if it never existed.

00:26:24 Cotton candy is only made of two ingredients, colored sugar and air.

00:26:29 So now we know that the only ingredient in the world that is, so far, free--

00:26:34 air.

00:26:35 Also, a thread of cotton candy is actually thinner than a hair.

00:26:39 By the way, December 7th is National Cotton Candy Day.

00:26:42 Hope you celebrate it.

00:26:43 If not, mark this day in your calendars for the next year.

00:26:47 With only two ingredients, this stuff has zero fat.

00:26:50 Also, it was created by a candy maker and a dentist.

00:26:56 You're trying on a pair of jeans, a dress, or a jacket, and are about to dig your hand

00:27:01 into the pocket when… you realize there's no depth to it.

00:27:05 The pocket is simply not there.

00:27:08 But why would anyone create pockets you can't put anything in?

00:27:12 And now would be a good time to pick your iPhone up from off the floor.

00:27:15 Well, the reason for fake pockets is simple.

00:27:19 If a clothing item has a specific cut or shape, pockets may spoil it.

00:27:23 They can alter the item's shape, either in the warehouse or already on the retail

00:27:28 rack.

00:27:29 The solution?

00:27:30 Getting rid of pockets in key areas.

00:27:32 Plus, fake pockets are obviously cheaper, and they don't get stretched out.

00:27:37 Interestingly, this practice goes back to the 17th century.

00:27:41 That's when pockets were actually removable.

00:27:44 They resembled small bags, and women, for example, could move them from one outfit to

00:27:49 another.

00:27:50 Unfortunately, it was also very convenient for pickpockets.

00:27:53 They could grab such a pocket and run off with it.

00:27:56 Then, clothes became more streamlined, and slim pockets started to be sewn right into

00:28:02 them instead of attachable bags.

00:28:04 This was believed to make the shape of a person's silhouette more alluring.

00:28:08 But soon, slimmer skirts came into fashion, and pockets went out of it.

00:28:14 And people started using handbags instead.

00:28:17 These days, most pockets are real, but some of them are still fake.

00:28:22 So how can we make sure that we don't actually turn a fake pocket into a hole, thinking it's

00:28:27 a real one?

00:28:28 Well, first of all, take a look at the stitching along the edge of the pocket, where it's

00:28:32 supposed to open up.

00:28:34 If you see a single loose thread, just snip a piece of it and start pulling gently.

00:28:39 If the pocket is real, the thread will easily come out.

00:28:43 But if you feel that the stitching won't budge, most likely, you have a faux pocket

00:28:48 on your hands.

00:28:49 If this is the case, just leave it be.

00:28:52 Now let's move on to some other everyday objects that may be hiding some secrets.

00:28:57 For example, those lines on some kinds of chips.

00:29:01 For one thing, they help with the distribution of spices and seasonings.

00:29:05 In other words, all those substances that make your chips taste like cheese are mostly

00:29:10 stored inside the lines.

00:29:12 Plus, the lines make chips crunchier.

00:29:15 Highlighters are filled with a special semi-transparent fluorescent ink that can glow in dim light.

00:29:21 Yellow and light green hues are the most popular because they don't prevent you from seeing

00:29:26 the text after black-and-white photocopying.

00:29:29 Photocopiers perceive yellow and light green marks as almost non-existent and don't print

00:29:34 them.

00:29:35 Now, back in the day, the first jeans had one problem.

00:29:39 Markers and miners who were the original jeans wearers put too much pressure on the poor

00:29:44 piece of clothing.

00:29:45 As a result, the seams couldn't withstand the stress and tore.

00:29:50 So, tiny metal studs were invented to prevent this from happening.

00:29:55 Most metallic zippers have a hidden lock inside them.

00:29:58 That's why you shouldn't leave the zipper handle in an upward position.

00:30:02 When you pull it downwards, it automatically locks.

00:30:05 It's all thanks to several tiny grooves hidden underneath the handle.

00:30:09 Now, about those horizontal lines on plastic bottles.

00:30:13 They help hold bottles up.

00:30:15 Some bottles are produced from soft plastic.

00:30:18 Without the lines, they wouldn't keep their shape.

00:30:20 Instead, they would twist easily or even break.

00:30:24 Bath foam isn't only for fun or a nice smell.

00:30:27 It helps regulate the temperature too.

00:30:29 The bubbles keep the water hot, and you can enjoy your bath a bit longer.

00:30:34 With or without your rubber ducky.

00:30:37 Ever noticed that layer of clear liquid in gel pens?

00:30:40 It's called the ink follower or stopper fluid.

00:30:44 The gel in such pens contains pigment particles dissolved in a polymer solution.

00:30:49 The gel should be thick enough to keep the pigment particles suspended, but also thin

00:30:53 enough to flow first onto the ball and then the paper.

00:30:57 The main task of the stopper fluid is to be a barrier to prevent the gel from evaporating

00:31:02 or leaking out.

00:31:04 Without this transparent fluid, your gel pen wouldn't function.

00:31:08 The fluid always stays in one position and doesn't get dissolved with the gel.

00:31:12 Neither does it move backward or flow out of the pen.

00:31:16 The holes in the bottoms of your earphones allow air to circulate up and through the

00:31:21 speakers.

00:31:22 It allows to increase low frequencies, making the bass sound deeper.

00:31:26 The quality of the sound also becomes much better.

00:31:30 Some plastic milk containers have dents on their sides.

00:31:33 Try as they might, they just cannot park without some damage.

00:31:37 Nah, I made that up.

00:31:39 These dents serve several purposes.

00:31:41 For one thing, when milk spoils, this process usually causes swelling and high-pressure

00:31:46 buildup inside the container.

00:31:48 Oh boy.

00:31:49 That's when the dent comes in handy.

00:31:51 It pops out and doesn't let the jug blow up.

00:31:54 Plus, if you ever decide to freeze the milk, it will expand like any other liquid.

00:31:59 And then again, the indentation will pop out and prevent the container from breaking inside

00:32:04 your freezer.

00:32:05 That's a good thing.

00:32:07 Airplane windows have rounded edges, and that's a crucial safety measure.

00:32:11 It prevents aircraft accidents.

00:32:14 Weak spots are usually situated in the corners.

00:32:17 If airplane windows were square or rectangular, each of them would have 4 potential weak spots.

00:32:23 Under pressure, they would collapse.

00:32:26 If you look closely at a tram's overhead lines, you'll see that its contact wires

00:32:31 zigzag back and forth instead of going in a straight line.

00:32:35 The thing is that all trams have pantographs attached to their roofs.

00:32:39 The upper part of the pantograph is gradually worn down by the overhead wire, and eventually

00:32:44 needs to be replaced.

00:32:46 To wear it down evenly, the wire is not installed strictly along the tram's path, but in zigzag

00:32:52 patterns.

00:32:53 As the tram moves, the pantograph slides along the wire, and it wears down evenly.

00:32:59 You might've wondered why some gas cans have two holes with caps, one bigger and one

00:33:04 smaller.

00:33:05 Before, I thought that the little hole was used when you poured something into a smaller

00:33:10 container.

00:33:11 But I was wrong.

00:33:12 A very infrequent occasion.

00:33:14 In reality, you're supposed to uncap it before you pour the gas inside the bigger

00:33:18 hole to prevent it from glugging and spilling on your clothes and on the ground.

00:33:24 Most of the buttonholes on a shirt are vertical, but the top and sometimes bottom ones are

00:33:29 horizontal.

00:33:31 The reason is simple – these two buttons slip out more often than others.

00:33:35 Luckily, producers have found the solution that can prevent these buttons from slipping

00:33:39 out – horizontal buttonholes.

00:33:41 What engineering!

00:33:43 Buttons tend to slip out less from such buttonholes.

00:33:46 Big sachets of sugar or salt are easier to open than many people think.

00:33:51 There's no need to tear off one of the ends.

00:33:53 The right way is actually to tear them down the middle.

00:33:58 Some boots have loops sticking out on the back.

00:34:01 Their main purpose is to help you pull your shoes on easier.

00:34:04 Just tug on the loop while you're pushing your heel into the boot.

00:34:08 You can also use these loops to hang your boots on a hook when they're dirty or when

00:34:12 you want to dry them after washing.

00:34:14 Or you can run your laces through the loop if you want to tie them around your ankle.

00:34:19 When you're on board the plane, you might spot a little triangle over your seat.

00:34:24 Such triangles show the flight crew the best spots to check the plane's flaps through

00:34:28 the window, just in case they're flapping.

00:34:31 If your shoes are really slippery, just take a bit of sandpaper and rub it on the soles

00:34:36 for better traction.

00:34:37 They'll become more grippy, and you'll be able to wear them out in the rain.

00:34:42 If they get too wet, they might turn gripy, but that's only if you have talking shoes.

00:34:48 If you drill several holes at the bottom of your garbage can, putting in and taking out

00:34:53 trash bags will become much easier.

00:34:55 You won't have any problems with suction.

00:34:58 You can usually find some silica gel in bags, shoes, and many other things you buy.

00:35:04 This shell absorbs excess moisture.

00:35:06 Don't throw it away.

00:35:07 Each time your shoes get wet, put a few packets of silica gel inside.

00:35:13 The thermos wasn't actually invented to keep your coffee warm.

00:35:17 It was made by a Scottish scientist who just wanted a safe place to put his chemicals at

00:35:21 a stable temperature.

00:35:23 So he took two bottles, put the smaller one inside the bigger one, and vacuumed out the

00:35:28 air between them.

00:35:30 Well, anyway, thanks for the hot coffee!

00:35:35 The Queen's Guard all appear to have the same uniform, with a shared role of standing stoically

00:35:40 for a long time.

00:35:42 But if you look closely at their hats, there are five different types.

00:35:47 The Grenadier has a white plume, the Coldstream has a red one, the Irish a blue plume, the

00:35:53 Welsh green and white, and the Scots Guard has none.

00:35:59 Their different divisions perform similar ceremonial duties at Buckingham Palace.

00:36:04 But they have other actual roles as well, suited to their specialization.

00:36:09 When peeling your boiled eggs, you can see a hidden layer under the shell.

00:36:13 These two membranes, an inner and outer one, are made from the same stuff as your hair,

00:36:18 keratin.

00:36:19 It protects the inside from bacteria and stops liquids from escaping.

00:36:24 You use "X" in your text, which represents a kiss.

00:36:27 It's been used this way for a very long time.

00:36:30 Its original purpose dates back to the Middle Ages, where it was a representation of a person's

00:36:35 faith, honesty, and sincerity.

00:36:38 Those that would sign off with an "X" would kiss it after signing as a display of a sworn

00:36:43 oath.

00:36:45 The "X"'s meaning later changed to represent the action of kissing.

00:36:49 And the first document showing this was a letter dating back to 1763, written by a naturalist

00:36:55 Gilbert White, who sent it to his wife.

00:37:00 William Shakespeare is a name familiar to everyone.

00:37:02 However, we don't know whether this was the actual way his name was spelled, and neither

00:37:07 did he.

00:37:09 He signed 80 different variations of his name spelling on all his works.

00:37:13 Historians haven't a clue which the correct spelling is.

00:37:17 The version that we know of was only used on two of his plays.

00:37:23 Different forms of alarm clocks were invented as far back as 348 BCE.

00:37:28 With many versions throughout the world, all with complicated mechanics.

00:37:33 Unaffordable to mostly everyone, they didn't catch on.

00:37:36 Alternate methods to wake up in the morning started to be used in the 1800s.

00:37:41 One process involving "knocker uppers" was common in some countries.

00:37:46 A person visited your house every morning to knock on your door four times.

00:37:52 Inventor Antoine Radiere felt that he should be woken only when he felt it necessary.

00:37:57 So in 1847, he invented the first adjustable alarm clock.

00:38:03 Tennis balls in Wimbledon must be kept at a perfect temperature to ensure they bounce

00:38:07 at a consistent level.

00:38:10 They're stored at 68 degrees Fahrenheit, so they're cold enough that the molecules inside

00:38:14 the ball shrink, ensuring they bounce lower.

00:38:18 Then they're continuously swapped throughout a match as they expand by being hit too much,

00:38:23 becoming too bouncy.

00:38:26 Wimbledon goes through 50,000 tennis balls each year.

00:38:31 You enjoy the smell of a freshly mowed lawn, as you associate it with the weekends and

00:38:36 summer.

00:38:37 But that smell is a sign of stress made by the grass.

00:38:41 Grass evolved to emit various elements when being eaten by bugs.

00:38:45 This signal attracts predator insects to remove them.

00:38:49 But unfortunately for the grass, there's nothing large enough to deter a lawnmower.

00:38:54 There is no oxygen inside your packet of chips.

00:38:58 If there was, it would influence the combination of molecules forming inside, spoiling the

00:39:02 chips faster.

00:39:04 The packets are instead filled with nitrogen, which pushes oxygen out.

00:39:09 And this extends the shelf life and quality of your chips.

00:39:14 You're traveling by plane overnight and just can't get to sleep.

00:39:18 And the first night in a hotel wasn't great, regardless of how comfy the bed was.

00:39:23 This is because of a human evolutionary trait called the first night effect.

00:39:29 When you sleep in a different place than your home, the left side of the brain responds

00:39:33 to more sounds while you're asleep.

00:39:36 It continues to analyze your surroundings without you realizing, acting as though it's

00:39:40 on a night watch and keeping you alert for any potential dangers.

00:39:45 Most animals have this trait, although it's a lot more subtle in humans.

00:39:50 But it's still effective enough to make sure you get your peanuts.

00:39:55 Before playing basketball with hoops, you would have instead been playing with peach

00:39:58 baskets.

00:40:00 When the game was invented in 1891, a peach basket was used, with the bottom of it cut

00:40:05 off.

00:40:06 But it only took 15 years for players to grow tired of constantly collecting the jammed

00:40:10 balls and to remove the basket altogether.

00:40:14 When you click your fingers, the snapping sound isn't from the physical click of finger

00:40:18 and thumb.

00:40:20 The noise actually comes from the finger hitting the palm.

00:40:25 The instant film for the first Polaroid cameras didn't have their own coating after taking

00:40:29 a photo.

00:40:30 To develop it, you applied it yourself.

00:40:33 Waiting for it to dry took a long time, so shaking it sped up the process.

00:40:38 Then from the 1970s, the film provided everything required for the photo to develop, making

00:40:43 the popular craze of shaking Polaroids pointless.

00:40:47 Shaking the photo can cause the ink to wave or blur before drying properly, so you shouldn't

00:40:52 actually shake it like a Polaroid picture, and just wait patiently instead.

00:40:58 Bug spray doesn't repel all bugs, especially the worst of them all, mosquitoes.

00:41:03 It does cover the scent of carbon dioxide, which is what attracts mosquitoes.

00:41:08 But the spray only protects you for a short distance.

00:41:12 Mosquitoes can also track carbon dioxide over long distances.

00:41:16 They will continue to stalk you until they find a gap in your invisible bug shield.

00:41:22 A great alternative is lavender, which contains linalool.

00:41:26 This fragrance completely overloads the mosquito's senses, making it unable to track you.

00:41:32 The half-belt on the back of some jackets appear like a fashion accessory.

00:41:36 It was initially designed that way for larger jackets, as they could also be used as a blanket

00:41:41 to wrap around oneself.

00:41:44 The belt's position helps hold the material together, so it's easier to walk with whilst

00:41:48 keeping you warm.

00:41:51 Ketchup wasn't originally intended to be your favorite condiment.

00:41:55 In 1834, a physician John Cook sold ketchup as a cure for indigestion.

00:42:01 It was an immediate hit, and today, 10 billion ounces are purchased annually in the USA,

00:42:08 although not as the intended medicine.

00:42:11 Thomas Edison made over 1,000 inventions, and one in particular, the light bulb, is

00:42:17 most famously linked to him.

00:42:19 However, he didn't actually invent it.

00:42:22 Warren De La Rue, a British chemist, had solved this scientific challenge 40 years earlier.

00:42:28 There were also 20 other inventors who made alternate versions before Edison did.

00:42:33 But earlier varieties relied on cotton thread and only lasted up to 14 hours.

00:42:39 But Edison, in 1880, used a carbonized bamboo thread instead, and his worked up to 1,200

00:42:46 hours.

00:42:47 It became the most commercially viable light bulb, and today's ones are similarly shaped

00:42:51 to Edison's original.

00:42:54 The first treadmill was used in England in 1818.

00:42:58 It was a large wooden cylinder with a handrail, although it wasn't used to keep fit.

00:43:04 Old criminals would be forced to use these for up to 10 hours per day as a punishment.

00:43:10 The energy output potential was realized, and soon it was built to work with water pumps

00:43:15 and grain grinders.

00:43:17 It was so effective that it was used in all prisons throughout the country.

00:43:21 But in 1902, it was decided that it was too harsh and stopped.

00:43:25 And now, this cruel punishment is mainly found in gyms.

00:43:31 During the 1940s, there was a shortage of cocoa, and it was important to find a solution

00:43:35 to this problem.

00:43:36 A production company found a way by mixing only a small amount of cocoa with hazelnuts

00:43:42 and milk, and the original Nutella was created.

00:43:46 It started out as a loaf spread, like a stick of butter.

00:43:49 It then transformed into a creamier version inside a jar in 1951.

00:43:54 But it wasn't until 1964 that it was given its famous name.

00:44:00 Your passport might be a dark shade of either green, blue, or red.

00:44:04 The darker color not only makes them appear more official, but is intended so that through

00:44:09 its journeys, the dirt that's collected is more easily hidden.

00:44:14 Wasabi was first used back in the 8th century.

00:44:18 It wasn't meant as a spicy condiment as it's served with sushi today.

00:44:22 Initially, it was used for its antimicrobial properties that help avoid the harmful reactions

00:44:27 to fish with sushi that's a bit too old.

00:44:34 Have you ever wondered what these extra holes at the top of your running shoes are for?

00:44:39 They're designed so that you can tie the shoes in multiple different ways.

00:44:43 That's useful when you want to compensate for things such as a bad stride or even a

00:44:47 damaged toe.

00:44:48 Plus, you can change the look of your shoes the way you prefer.

00:44:55 Many people use a dust jacket of their book as a bookmarker.

00:44:59 No problem with that, it will save your book from bent page corners.

00:45:03 But the primary purpose of a dust cover is to keep the book safe from distortions.

00:45:08 For instance, if you spill juice or drop some of the food on your book while reading it.

00:45:14 The tic-tac dispenser has this little groove on its top, so you can dispense only one tic-tac

00:45:19 at a time.

00:45:21 Even though let's be honest here, nobody does that.

00:45:24 Most of us just spill a whole bunch at once and then we wiggle all those extra tic-tacs

00:45:28 back in.

00:45:31 Those rubber bumps you see between the tire treads are there for your safety.

00:45:35 The raised edges tell you what the minimum height of your tread is.

00:45:39 If the bump and the edges are even, it's time for you to visit the tire shop as soon as

00:45:44 possible.

00:45:45 But if the bumps are well beneath the level of the edges, you're good to go.

00:45:51 What about that black grating on the microwave window?

00:45:54 It's something called a Faraday shield.

00:45:57 And it's there to prevent microwaves from getting away and turning the entire room into

00:46:01 a Faraday cage.

00:46:03 If the microwaves escape, your meal won't cook properly either.

00:46:07 So yep, the cage is not there to make it difficult for you to see your meal while it's cooking.

00:46:11 It's keeping the electromagnetic energy inside.

00:46:17 How about a wrench compatible screwdriver?

00:46:19 Cover your screwdriver with the end of your wrench and you can increase its torque.

00:46:24 That's why the head of your screwdriver is designed the way it is.

00:46:27 When you have odd angles, you can use this strategy.

00:46:32 You've probably heard those myths, "The blue side of the eraser can erase the pen."

00:46:36 False.

00:46:37 Its purpose is to erase a pencil.

00:46:40 But in case you're writing something on heavier paper.

00:46:43 The blue side can remove smudges you see after using the pink eraser too.

00:46:49 Have you ever wondered why oranges in supermarkets mostly come in the red mesh bag?

00:46:55 It's a trick to make this food look more orange and encourage you to make a purchase.

00:46:59 An extra tip, don't throw away the mesh bag.

00:47:02 Tie it up so you can have a small pot scrubber to clean your sink, kitchen, appliances, and

00:47:08 dishes.

00:47:11 You can see golf balls don't have a perfectly round shape.

00:47:14 Their surface is covered with many little dimples, something golf balls didn't always

00:47:18 have.

00:47:19 At one point, experienced golfers started noticing how through time, older balls with

00:47:25 imperfections such as nicks and bumps could travel further.

00:47:30 Such things create turbulence in the air around the golf ball, which eventually reduces drag.

00:47:36 So manufacturers started producing balls with dimples so they could go farther and faster.

00:47:44 You might have noticed that sometimes there are ridges in toothpick tops.

00:47:48 It's more hygienic because when you break that off, you can prop the toothpick up on

00:47:52 it and it won't touch anything.

00:47:56 Another safety feature you'll find, this time in your car, is a tab on your rearview

00:48:01 mirror.

00:48:03 With it, you can change the position of the mirror so you don't get blinded if there's

00:48:06 a car behind you with its high beams on.

00:48:09 So this little tab helps you control the glare of lights coming from behind.

00:48:14 This feature showed up in the 1930s, but in the early 1970s, it became a part of standard

00:48:19 equipment in most trucks and cars.

00:48:23 Do you see that tiny hole on your iPhone right next to the rear-facing camera?

00:48:28 It's a microphone, and it's there so your phone can record sound as you turn your camera

00:48:32 around.

00:48:36 Some cables have a thick cylinder towards the end of the cord.

00:48:40 It's called a ferrite core or a choke.

00:48:43 It's a magnetic iron oxide that stops high-frequency electromagnetic interference.

00:48:48 For example, you know that annoying static noise you get if you bring your phone too

00:48:53 close to a speaker?

00:48:55 This interrupts your call, which is why cable cords with big cylinders are pretty useful,

00:48:59 because they prevent these things.

00:49:03 Do you know why nearly all luggage bags and backpacks have two zippers?

00:49:08 It's way more convenient and easier to open in that way.

00:49:11 And not just that, you can also lock these two zippers together to keep the stuff inside

00:49:16 your bags safer.

00:49:19 You know how toilets at public spots like malls have those big gaps at the bottom?

00:49:25 It's primarily for better circulation of air.

00:49:28 This type of door also makes it easier to clean the toilet or check if it's occupied

00:49:32 if you're standing in line.

00:49:35 Other than that, if you get stuck there and the lock gets broken, you still have a way

00:49:39 to escape – you can just crawl out.

00:49:44 Ever notice those plastic end caps on utility knives?

00:49:48 And they also have scales on them, which indicates you may use them multiple times but with sharp

00:49:53 edges.

00:49:55 You can separate the blades through these plastic end caps, then you can move the slider

00:50:00 and bring the sharp blade to the front.

00:50:03 If you've ever taken a moment to examine a regular grocery cart, especially their fold-out

00:50:08 section, you probably noticed those metal loops jutting out.

00:50:12 They're designed to protect the items you carry in your cart.

00:50:16 You can use them to hang bags with soft items.

00:50:20 You don't want to accidentally squish with heavier products, like bread, or easily breakable

00:50:25 things like eggs.

00:50:28 Many coffee mugs come with curved notches on their bottom.

00:50:32 When you're washing your mugs, put them against the rack at an angle in your dishwasher.

00:50:36 This way, the water won't pool in there, so your favorite cup will be completely dry

00:50:40 by the time you take it out of the dishwasher.

00:50:44 If you're a McFlurry fan, you've probably noticed there's a square hole in the handle

00:50:49 of the spoon.

00:50:50 It's there so you can attach it to the special machine that mixes the ice cream and your

00:50:54 favorite toppings together.

00:50:57 The machine has a bar that slips into this square-shaped spoon and then thoroughly stirs

00:51:01 it.

00:51:03 And you get the spoon so they can minimize the mess during the process.

00:51:07 Quite neat, wouldn't you say?

00:51:10 A regular milk jug has a dent on one side.

00:51:14 Some might see it as a random design decision, but a dent has several purposes.

00:51:19 One of them is to get bigger if there's a gas buildup.

00:51:23 This happens when your milk is spoiled, so you don't even have to try to check this

00:51:27 out.

00:51:28 Also, the dent is there so the jug doesn't burst if you accidentally drop it.

00:51:33 The dent allows the expansion space that deals with the sudden pressure that happens when

00:51:37 you drop the jug.

00:51:41 Dental floss.

00:51:42 Sure, it's important for your dental health, and it's easy to assume what you do with it.

00:51:46 But dental floss is great in the kitchen as well, because it's a very precise cake slicer.

00:51:52 Way better than a regular knife.

00:51:57 Most kitchen shears have a serrated opening right there at the center where the blades

00:52:01 and handles meet.

00:52:03 It's something you can use to trim difficult herbs such as rosemary, thyme, or chives.

00:52:09 Because of this opening, you don't need to pick the leaves off by hand, but de-stem them

00:52:13 in one motion.

00:52:16 The majority of gelatin containers or single-serving yogurts come with a tinfoil lid, and in most

00:52:22 cases you can use this covering as a disposable spoon.

00:52:26 Just peel away the covering and after a couple of simple folds, you'll have a perfect little

00:52:31 spoon for your midday snack.

00:52:34 If you look at it on the street, you'll think a fire hydrant is about three feet in height.

00:52:39 But the actual size of the device used to provide water supply to firefighters all over

00:52:43 the world is twice as large.

00:52:45 That is, if you count the rest of the hydrant, which is hiding underground.

00:52:49 They're mostly red, and it's not just a matter of urban design.

00:52:53 First of all, they need to be of bright, easily noticeable colors so firefighters can spot

00:52:57 them fast when they need to.

00:52:59 The choice of color depends on how much water the hydrant can hold.

00:53:03 It can sometimes vary depending on the location, but here's the breakdown.

00:53:07 A red fire hydrant can splash 500 gallons of water per minute, while an orange one at

00:53:13 least 1,000 gallons.

00:53:16 Green ones mostly process 1,500 gallons of water per minute, and the most plentiful ones

00:53:20 colored blue can generally contain over 1,500 gallons.

00:53:25 Hey bowling fans, isn't it super annoying when your bowling ball gets cracked?

00:53:30 Turns out that most of them get damaged because of incorrect storage or spikes in temperature.

00:53:36 Now come on and face it, since it's already cracked a bit, aren't you curious what's actually

00:53:40 inside the bowling ball?

00:53:41 Because I sure am.

00:53:43 Let's have a look.

00:53:44 They mostly make the inner core of the ball of powdered metal oxides, like calcium or

00:53:48 iron oxide.

00:53:49 Then mix them with some resin and catalyst to harden the whole mixture.

00:53:54 So that light bulb shape you now see inside of the ball is actually its heaviest part.

00:53:58 It also influences how your bowling ball rotates when going down the lane.

00:54:04 The same goes with spray paint cans.

00:54:06 When you shake it, it makes a weird noise, but what is that thing in there?

00:54:10 It's called a "Pee", and it's meant to hold the paint mixture in place and maintain its

00:54:14 shape.

00:54:15 They generally make it out of plastic, metal, or ceramic.

00:54:18 It basically acts as a whisk to make sure your paint is well mixed together before you

00:54:22 apply it to your surface of choice.

00:54:25 Ever wondered how soda bottles keep that refreshing fizz for that long?

00:54:29 Well, they have a little plastic ring fastened to the lid.

00:54:33 They place it there to keep the gas from escaping and making the soda go flat, even if you shake

00:54:38 it around in your bag the whole day.

00:54:41 Speaking of things we use on a hot summer's day, wait, wait, don't put your baseball cap

00:54:45 on just yet.

00:54:47 Take a look at it for a minute, and you'll notice there's a small button on the very

00:54:50 top.

00:54:51 Is it functional, or is it just there for the sake of design?

00:54:54 Way back when people started using fabrics to cover their heads, some say the button

00:54:58 was actually functional.

00:55:00 Since it's on top of the cap where the fabric panels come together, the top button helps

00:55:05 keep the cap crown in one single piece.

00:55:08 Now with recent advances in fabric and pattern design, the button is more of an aesthetic

00:55:12 feature.

00:55:13 It's used to cover up the joint point of the fabric panels.

00:55:16 Your cap might not have a button at all, but don't you think a cap actually looks better

00:55:20 with one?

00:55:22 Cotton pads have two sides, and if you take the time to look at them carefully, they're

00:55:26 actually different in texture.

00:55:28 Just in case you've ever wondered why, the textured side is for applying makeup, and

00:55:33 the even side is for removing it.

00:55:36 Bookworms – this one is for you.

00:55:39 Dust jackets that come with a lot of hardcover books are not just meant to make your book

00:55:42 look pretty.

00:55:43 They also double as a bookmark.

00:55:45 Just fold the pages you've already read underneath the inside of the jacket, and voila!

00:55:51 Next time you reach out for your favorite shirt, take a look at the top buttonhole.

00:55:55 It should be stitched horizontally, and all the other ones are vertical.

00:55:59 Turns out that the dress shirt was designed this way since the first and the last buttons

00:56:03 were the first ones to unbutton throughout the day.

00:56:07 They then changed the direction of the buttonhole to ensure the shirt would stay nice and fitted

00:56:11 before you're ready to take it off.

00:56:14 These days we have so many variations of this awesome dessert that it's hard to imagine

00:56:18 we've ever lived without it.

00:56:20 You can find different types of cookie dough ice cream or even chocolate chip cookie cake

00:56:24 basically everywhere, but the famous cookie wasn't actually invented until 1930.

00:56:30 The story goes that a woman named Ruth Graves Wakefield was preparing some chocolate cookies

00:56:34 as she was waiting for some guests to arrive.

00:56:37 She soon figured out she was out of baker's chocolate, a crucial ingredient for the classic

00:56:41 cookies.

00:56:42 To fix things up, she chopped up a block of semi-sweet chocolate, thinking it would

00:56:46 eventually spread out evenly throughout the batter given the heat of the oven.

00:56:50 Things didn't necessarily go as planned, but hey, it's great they didn't because this is

00:56:54 how she invented this modern dessert we now can't get enough of!

00:57:00 And speaking of popular snacks, the potato chip is even younger than the chocolate chip

00:57:04 cookie.

00:57:05 Well, at least historically.

00:57:07 There are many stories trying to explain how it was invented.

00:57:11 One of them goes like this.

00:57:12 A chef named George Crum, based in New York, put the chips together in 1953.

00:57:18 He decided to try a different cooking solution when one of his customers didn't have nice

00:57:22 things to say about his French fries.

00:57:25 He said they were too thick and kind of mushy.

00:57:28 Then, Crum came up with potatoes that were thinly sliced and fried until brown.

00:57:33 People absolutely loved the dish, and they welcomed the first ever batch of chips with

00:57:38 open arms.

00:57:40 Ice cream anyone?

00:57:41 If the story is true, back in 1904 at the St. Louis World's Fair, one ice cream shop

00:57:46 owner ran out of cups to serve his dish.

00:57:49 So he fashioned a waffle into the shape of a cone, and the rest was history.

00:57:54 Okay, I'll admit it, chewing gum-like treats have been around since the ancient Greeks,

00:58:00 so this one isn't particularly a revolutionary discovery.

00:58:03 But the actual gum we buy today wasn't there until the late 1800s.

00:58:08 An American inventor named Thomas Adams wanted to mix together different chemicals to create

00:58:13 rubber.

00:58:14 He tried and failed for that matter to play with chicle for his experiment, but ended

00:58:18 up fashioning this neat treat.

00:58:20 They still use chicle to this day to produce most chewing gums.

00:58:24 Back in the 1800s, there lived a man named Jean-Baptiste Jolly, who worked in the fabric

00:58:29 industry as a textile maker.

00:58:31 How he came up with this next invention that we use a lot these days has less to do with

00:58:35 him and more to do with his maid.

00:58:38 The story goes that the woman accidentally knocked a kerosene lamp over onto a table

00:58:43 cloth.

00:58:44 Instead of getting upset over the damaged fabric, Jolly noticed that the substance actually

00:58:49 made the material cleaner.

00:58:51 Figured it out yet?

00:58:52 Yep, that's how the idea for the very first dry cleaner popped up.

00:58:56 A very neat accident, if I do say so myself.

00:59:00 Now this one I loved.

00:59:02 Did you know matchsticks were initially called friction lights?

00:59:05 Or at least that's how their inventor, a chemist named John Walker, called them back in 1826.

00:59:12 He scraped a stick coated in chemicals across his hearth, totally by accident one day, and

00:59:17 realized that they ignited and created a spark.

00:59:21 Initially made out of cardboard, they were then made using wooden splints and sandpaper.

00:59:27 Back in the 1940s, a man named Harry Coover stumbled upon a chemical formulation that

00:59:32 seemed to stick to everything it touched.

00:59:35 The scientific community at the time didn't look much into it as the formula didn't seem

00:59:39 to have many applications back then.

00:59:42 It wasn't until 1951 that he looked a bit more into the formula and decided to repurpose

00:59:47 it.

00:59:48 Along with a fellow Eastman Kodak researcher named Fred Joyner, they gave it a proper full

00:59:53 name.

00:59:54 But you must know it by the shorter version.

00:59:57 Super Glue.

00:59:59 It also has many uses in security these days that it's hard to believe that we didn't come

01:00:03 up with this one on purpose.

01:00:05 Back in 1903, a scientist named Edward Benedictus knocked over a flask by accident.

01:00:12 He looked down and was amazed to see that the glassware had just slightly cracked but maintained

01:00:17 its shape.

01:00:18 He was expecting it to break into a million tiny pieces.

01:00:21 Curious about this hidden feature, he looked into it and figured out what was keeping the

01:00:25 glass together was a substance coating the inside of the glass.

01:00:29 Ta-da!

01:00:30 That's how humanity came up with safety glass!

01:00:33 There's nothing better than a nice piece of buttered toast for breakfast, if we're

01:00:39 not counting hot fudge sundaes.

01:00:41 But if you find it harder to spread out cold butter over your toast, here's an idea.

01:00:46 Use a cheese grater.

01:00:48 Figure out the amount you need and grate the product.

01:00:51 The process will also soften the butter, making it easier to spread, and you won't have

01:00:55 to melt a too large amount of it in the process.

01:00:58 But still, that hot fudge!

01:01:01 Dried pasta comes in all sorts of different shapes and sizes for a reason.

01:01:06 That's because each type of pasta goes best with a particular sauce.

01:01:11 Pasta shells, for example, are perfect with denser and chunkier sauces.

01:01:15 Why?

01:01:16 Because the sauce gets inside the shells, making it easier to serve and eat the dish.

01:01:21 The ribbed outer surface also helps with covering the shells in the sauce.

01:01:27 If you ever end up burning your cookies, you can save them with your trusty grater too.

01:01:32 Just grate off the blackened parts after carefully taking the cookies from the baking tray.

01:01:37 But be careful and wait until the cookies have cooled down.

01:01:41 Also, if you ruin their shape a bit, you can always dip them in some melted chocolate.

01:01:47 After the chocolate cools down, you'll have perfectly shaped cookies.

01:01:51 Although after it gets past your lips and beyond, does the shape of the cookie actually

01:01:56 matter?

01:01:57 Just sayin'.

01:01:59 If you like adding a lot of ingredients to your sandwiches but don't really appreciate

01:02:04 it when the bread gets soggy, there is a way to reduce the amount of moisture.

01:02:08 Pick your sliced tomatoes or cucumbers and place them between two paper towels for up

01:02:13 to 5 minutes.

01:02:14 After that, you can use them.

01:02:16 Also, make sure to spread butter, cheese, or sauces like mayo or ketchup onto the bread

01:02:22 first.

01:02:23 This will help you seal the bread and keep moisture at bay.

01:02:28 Some people think that the little white string that you find near an egg yolk needs to be

01:02:32 removed before you cook the egg.

01:02:34 Well, I'm here to tell you that these strands are called chalaza and you don't actually

01:02:39 need to get rid of them.

01:02:40 They help keep the yolk in place at the egg's center.

01:02:43 A chalaza is not going to mess up the consistency or the taste of your food, so removing it

01:02:49 is completely up to you.

01:02:51 Ever notice that most juice boxes come with two flaps, one on each side?

01:02:56 Those are actually handles.

01:02:58 Manufacturers design the boxes this way to make it easier for us to hold them.

01:03:03 This way, we don't end up squeezing the box, making the juice spill out.

01:03:09 Now you don't need to be a baking pro to know that you can use both white and brown

01:03:13 sugar in your recipes.

01:03:15 But have you ever wondered what the difference between these two is?

01:03:19 It turns out that the only thing that sets them apart is that, during production, a small

01:03:24 amount of molasses is added to the brown sugar.

01:03:28 Molasses is basically a sort of syrup you get when processing sugarcane.

01:03:32 It's usually removed during the refining process.

01:03:35 That's how white sugar is produced.

01:03:38 If some amount of molasses remains in the final product, we end up with brown sugar,

01:03:43 with its specific taste and darker hue.

01:03:46 It's a good thing.

01:03:49 There are a lot of things you can put in your dishwasher, apart from your dishes.

01:03:53 For example, you can clean such things as your silicone oven mitts or the knobs of some

01:03:58 kitchen appliances, like your oven or stove.

01:04:01 Some kitchen sponges and reusable towels may be safe to clean in the dishwasher as well.

01:04:07 Speaking of kitchen cleaning products, there are a lot of things you can do with dish soap,

01:04:12 like de-griming your patio furniture.

01:04:15 Just add a bit of dish detergent to some warm water and use the solution to wipe down your

01:04:19 outdoor furniture with a piece of cloth.

01:04:22 Finally, rinse it clean using your garden hose.

01:04:26 You can also use dish soap to get rid of greasy stains on your clothes.

01:04:30 Be it pasta sauce or salad dressings.

01:04:33 Hey, sometimes we miss our mouths!

01:04:35 So just apply a little dish detergent to the stain and then rinse with water.

01:04:40 Use non-colored soap for lighter clothes.

01:04:43 For more difficult stains, let the dish soap sink in for a bit, then throw the piece of

01:04:47 clothing in the washer as usual.

01:04:49 And think about maybe getting a bib.

01:04:52 If none of the methods have helped you organize your closet, and you're still overwhelmed

01:04:57 with large piles of clothes, there's a simple way that might be effective.

01:05:01 It's called the one-in-one-out rule.

01:05:05 That means for every new piece of clothing you buy, you need to get rid of one you already

01:05:09 have.

01:05:10 That means you'll always be de-cluttering your space.

01:05:14 To make it easier to find something in your closet, good luck!

01:05:17 Keep your most-used items at eye level.

01:05:20 This way, they'll be easier to find and pull out when you're in a hurry.

01:05:24 Those items that you tend to use less often, like your evening clothes, for example, can

01:05:29 stay on the shelves above or below your eye level.

01:05:33 You can make good use of old spice tins.

01:05:36 If you glue some powerful magnets to the inside of the tins, they can double as magnetic shelves.

01:05:41 You can use them for all sorts of everyday items, like kitchen pliers, ice cream scoops,

01:05:47 or even cutlery.

01:05:49 You can also place them on any metallic surface, like your refrigerator door.

01:05:53 They'll blend in nicely with your kitchen magnets.

01:05:57 Hidden in your laundry room, there's a great tool for picking up pet hair.

01:06:01 It sometimes works better than lint rollers.

01:06:04 Take a dryer sheet and, using some elbow grease, you'll get rid of that dog or cat hair in

01:06:09 no time.

01:06:10 It works on all sorts of surfaces, but it's especially effective for upholstered furniture.

01:06:17 If you don't like it when a door starts squeaking whenever you enter a room, get a

01:06:21 bar of soap and rub it straight on the hinges.

01:06:24 This will only help for a while, though, but it'll do the trick until you manage to get

01:06:29 to a hardware store and, you know, buy some oil.

01:06:33 Have you ever noticed that in some elevators, there's a star next to the number of a specific

01:06:38 floor?

01:06:39 No, it's not to indicate where my office is.

01:06:43 It's there to point out where the nearest exit is.

01:06:45 And it's not always on the first floor.

01:06:47 It's most likely located on the floor closest to the street.

01:06:52 Have you ever wondered why stop signs are red?

01:06:56 Back in the day, they didn't actually have any particular color at all.

01:07:00 Before the 1920s, they didn't even have a standardized shade.

01:07:04 In 1922, though, someone came up with the octagon.

01:07:08 But initially, it was painted yellow.

01:07:11 All because the red coloring tended to fade out too quickly because of sun exposure.

01:07:16 So yellow turned out to be the best option.

01:07:19 It took another 30 years for fade-resistant enamel paint to be invented.

01:07:23 They ended up changing the color of the stop sign back to red.

01:07:27 After all, it's still the best color if you want something to be easily noticeable.

01:07:32 Do you know there's a type of rose that can grow taller than people?

01:07:37 According to the Guinness Book of World Records, the tallest rosebush ever found grew in Vienna,

01:07:43 Austria.

01:07:44 It was a staggering 28.5 feet tall.

01:07:47 Yes, it arose to a great height.

01:07:50 In the same way we all have unique patterns on our fingerprints, no two tigers have the

01:07:55 same set of stripes.

01:07:56 It makes it easier for people working with this feline species to distinguish one tiger

01:08:01 from another.

01:08:02 I'll bet you didn't know the White House has its own flower shop hidden in the basement

01:08:07 of the building.

01:08:08 It's supposed to provide flower arrangements for all sorts of events that take place there.

01:08:14 It's probably no surprise that pizza has become an American staple dish despite its

01:08:19 Italian origin.

01:08:21 People in the US love it so much that they buy 350 slices of pizza every second in the

01:08:27 States.

01:08:28 Man, I'm not getting my fair share.

01:08:31 To manage the huge demand for this delicious dish, around 17% of all restaurants in the

01:08:37 US are pizzerias.

01:08:39 Finally, there's a way to make lemon juice without the seeds getting into your beverage.

01:08:45 Try cutting the fruit in two and squeezing it with a pair of kitchen tongs.

01:08:49 The pointed end of the lemon should be facing down.

01:08:52 The juice will flow down, but the seeds will remain inside the lemon.

01:08:57 Ooh, lemony!

01:08:58 It goes well with pizza!

01:09:02 Road and construction workers are usually dressed in orange because the bright orange

01:09:06 hue is visible even in bad weather.

01:09:09 It's the most effective color to attract attention and alert people.

01:09:12 No wonder lots of safety jackets and traffic cones are orange as well.

01:09:16 The stop sign has an eight-sided shape to help drivers recognize it easily, even if

01:09:21 they see it from the back.

01:09:23 And when the signs weren't reflective yet, the octagon shape prevented drivers from confusing

01:09:27 the stop sign with any other at night.

01:09:30 The rumble strips on the side of the road are placed there to alert drivers who doze

01:09:34 off behind the wheel.

01:09:36 When their tires move over these strips, the noise and vibration work like an alarm clock.

01:09:41 There are magnetic locks on fuel hoses at gas stations.

01:09:45 They come in handy if someone drives away with the gas nozzle still attached to their

01:09:49 car.

01:09:50 In this case, the lock detaches the hose automatically.

01:09:52 Oh, that's embarrassing.

01:09:55 Gasoline looks like a rainbow in a puddle because it can't mix with water.

01:09:59 It forms a thin membrane over it.

01:10:01 When light reflects from it, and the water at the same time, you've got a rainbow.

01:10:07 A triple handle on a jerry can is there to make it easier for two people to carry it

01:10:11 and distribute fuel evenly.

01:10:14 Gas cans often have a second hole that actually needs to be uncapped too before you pour the

01:10:18 gas.

01:10:19 The air passage will prevent it from pouring out, so no more fuel waste.

01:10:24 Most gas cans have two holes with caps, a bigger and a smaller one.

01:10:29 You're supposed to uncap the smaller hole before pouring gas inside the bigger one.

01:10:33 It'll prevent the liquid from glugging and spilling all over your clothes and the ground.

01:10:38 Another little thingy we often neglect is a point on an ointment cap.

01:10:43 Most tubes are usually sealed with a plastic film or a foil, and opening it with your fingernails

01:10:48 isn't the best idea.

01:10:49 A point easily opens even the most safely sealed tube.

01:10:54 You can use most screwdrivers together with a wrench to create more torque.

01:10:59 Just place the wrench over the handle of the screwdriver.

01:11:02 This way, you'll need to apply a lot less force than before.

01:11:06 You'll also be able to get to hard-to-reach areas more easily.

01:11:10 They install cameras in shops, banks, and hospitals to monitor everything.

01:11:15 If something happens, you can call the police or rescuers.

01:11:19 The camera really helps to solve a lot of problems.

01:11:21 Why are there no cameras on planes?

01:11:25 The crew keep order on the plane, but they won't be able to do anything if something

01:11:28 serious happens.

01:11:30 Besides, there's nowhere to run on the plane.

01:11:33 During the flight, the cameras are useless, and after the flight, the words of the passengers

01:11:38 work ideally instead of cameras.

01:11:40 So if cameras do no good, then why spend money on them?

01:11:45 Water is great at cleaning stuff because it has triangular molecules.

01:11:49 They're made of one oxygen and two hydrogen atoms.

01:11:52 Um, H2O?

01:11:54 Such molecules have slightly different charges on their opposite sides, pretty much like

01:11:58 magnets.

01:11:59 That's why water easily sticks to other molecules, including those that make up dirt.

01:12:04 Lots of private houses have triangular-shaped roofs because this allows rain, snow, and

01:12:09 fallen leaves to slide off the slope.

01:12:11 If all this stuff piled up on top of your house, one day, your roof would collapse.

01:12:17 When a storm is coming, clouds seem to turn dark, but it's just an illusion.

01:12:21 Thin clouds on a sunny day let the light through easily.

01:12:25 They also scatter all the colors of the light spectrum.

01:12:28 This makes us perceive the clouds as white, but the thicker the clouds are and the more

01:12:32 water droplets they contain, the less light they let through and the darker they look.

01:12:38 A good doorknob is the one made of brass, bronze, or some copper alloys.

01:12:44 These metals have an anti-germ effect.

01:12:47 Bacteria spread way slower on them.

01:12:49 They also get rid of germs pretty fast, within a couple of hours.

01:12:53 Nope, it doesn't mean you don't have to wash your hands.

01:12:57 Diamonds have such symmetrical shape to show you their brilliance.

01:13:00 Initially, the gems aren't so beautiful.

01:13:03 They go through several stages of cutting and then become pieces of elegance.

01:13:08 Most of these stones have a round shape with slightly pointed corners.

01:13:12 Diamonds shine the brightest in this shape.

01:13:16 Why are there two holes in the socket?

01:13:18 The left hole is neutral, the right hole is not, and the gap underneath is ground.

01:13:24 Electricity needs to flow through the chain.

01:13:27 The current flows from the hot slot, passes through your phone charger, for example, and

01:13:31 then goes through the neutral hole.

01:13:34 Ever wondered what that small pocket on your jeans is for?

01:13:37 People used to wear watches on chains.

01:13:40 That small pocket was meant for it.

01:13:42 Now, almost no one wears such a watch, but the pocket remains.

01:13:46 You can still keep something small in there, like a ring.

01:13:49 In London, there are some poles that look like street lamps, but there are no bulbs.

01:13:54 Well, their official name is stink pipes, and they're a thing of the past now, but

01:13:59 they used to come in handy back in the 19th century.

01:14:02 These hollow poles would vent away the air and explosive gases with bad smells to prevent,

01:14:07 shall we say, unwanted consequences.

01:14:11 Most kitchen shears have metal plier-like teeth in the middle.

01:14:14 Between the handle grips, they can help you crack nuts, crab shells, and other tough products.

01:14:20 You can also open jars and bottles or remove herb stems with their help.

01:14:26 Leather often looks dull to the eye because it's covered with itsy-bitsy scratches and

01:14:30 scrapes.

01:14:31 They scatter the light that hits the material.

01:14:33 When you coat your shoes in a layer of wax, you fill these tiny crevices.

01:14:38 The surface becomes smoother, and the rays of light bounce off it more evenly.

01:14:42 That's why the leather looks shiny.

01:14:46 Shears are filled with a special semi-transparent fluorescent ink that can glow in dim light.

01:14:52 Yellow and light green hues are the most popular because they don't prevent you from seeing

01:14:56 the text after black-and-white photocopying.

01:15:00 Photocopiers perceive yellow and light green marks as very pale and don't print them.

01:15:05 They make magnets shaped as a horseshoe because this increases the magnetic force.

01:15:10 Colors matter, too.

01:15:11 The blue part indicates the south pole, the red part the north pole.

01:15:16 The two poles work simultaneously and increase the attraction force.

01:15:21 The dime-sized holes in elevator doors is actually a keyhole.

01:15:25 If the doors get stuck, an operator can open them manually thanks to this hole.

01:15:29 They'll just insert a special key.

01:15:33 The tiny hole in the airplane window is there to balance air pressure.

01:15:37 The window has three layers.

01:15:39 The outer pane is extremely sturdy.

01:15:42 It can withstand air pressure differences during takeoff and landing.

01:15:46 The inner pane, which is the closest to you, is made of cheaper materials.

01:15:50 It prevents potential damage to the window.

01:15:52 The hole itself is in the middle pane.

01:15:55 It not only balances the pressure but also prevents the window from fogging.

01:16:01 Escalator brushes are there for your safety.

01:16:03 They don't allow you to come too close to the edge of the escalator.

01:16:07 This way, your clothes won't end up between the steps.

01:16:10 You see the sun as yellow or orange.

01:16:13 Because the atmosphere of our planet scatters such colors as blue, green, and violet, this

01:16:18 is also why the sun looks warmer at sunrise and sunset.

01:16:23 Go shopping for some oranges and I'm sure you'll get them in a red mesh bag.

01:16:27 You'll rarely see them lying around without one of those.

01:16:30 It's pure marketing, and that color isn't a random choice.

01:16:34 When packed in a red mesh bag, oranges appear more orange, fresher, and more appealing to

01:16:39 you.

01:16:40 So, you're more likely to buy them, right?

01:16:43 Lemons are usually sold in green mesh bags for a similar reason.

01:16:47 If you pack them in red, they'll appear more orange.

01:16:50 Green goes better with yellow and makes those lemons stand out.

01:16:54 Mattress manufacturers make a limited number of different mattresses, and the only way

01:16:58 to make them look different is to come up with a fancy stitching pattern.

01:17:02 Two mattresses of two different companies might be the exact same quality but cost differently.

01:17:08 Most people will never know it and will decide that different patterns mean something in

01:17:12 terms of quality.

01:17:13 So, when shopping, don't mind the pattern at all.

01:17:18 Almost all hotels have white bedsheets.

01:17:20 They choose this color specifically to show how high their standards of cleanliness are.

01:17:25 The whiter and brighter the sheets are, the more luxurious the hotel seems.

01:17:29 It's much easier to see dirt and stains on white linen.

01:17:33 It's like proof that you've checked into a clean room.

01:17:36 Seat belt on the passenger seats has a fabric loop.

01:17:39 When put under a great amount of pressure, the stitches on the loop rip apart so the

01:17:43 excess fabric can assist in cushioning the passengers.

01:17:47 The extra few inches can make a great difference within a dire circumstance.

01:17:51 However, there isn't one on the driver's side.

01:17:55 Because the driver is so close to the steering wheel, it's safer for them not to have one.

01:18:00 Seat belts were originally invented in the mid-19th century, though this technology wasn't

01:18:05 brought into common practice until the 1960s.

01:18:09 Pre-collision sensory technology has assisted with developing the safety of seat belts and

01:18:14 other features to the next level.

01:18:16 Effectively predicting a car's collision, the technology directs the seat belts to automatically

01:18:21 tighten, aligning the airbags and ensuring the brakes will be pre-loaded to reduce shock.

01:18:28 Every year, 6 million car accidents occur, which explains why all cars still must continue

01:18:33 to develop safety features, not only to alleviate accidents, but to protect people more effectively

01:18:39 within their cars.

01:18:42 The materials that make up the body of cars only started getting replaced within the last

01:18:46 25 years, ranging from aluminum and magnesium alloys to carbon fiber composites.

01:18:53 These lighter materials not only enable a more fuel-efficient journey, but they also

01:18:57 ensure that when a car is in an accident, its build provides a "crumple zone."

01:19:02 As a car hits another object, the crumple zone absorbs energy from the collision.

01:19:07 Although this would appear to cause more damage to the car, it helps prevent impact on the

01:19:12 passengers.

01:19:13 Front and rear bumpers are very underrated, and due to their long history of being used

01:19:18 in cars, you can't imagine a time we didn't use them.

01:19:22 They were invented in the late 1800s.

01:19:25 The bumpers evolved over the years to the point we don't even realize we have them.

01:19:29 But they're there, quietly waiting under the outer covers, consisting of compressible foam

01:19:34 or plastic around a rigid reinforced bar.

01:19:39 All the windows of your car are made of glass, but the windshield is made of a shatterproof

01:19:44 version.

01:19:45 It's laminated, so whatever might hit it, you can be sure there won't be any shards

01:19:49 of glass falling into the front seats.

01:19:52 Normal glass was used up until the 1950s.

01:19:56 As vehicles became more prominent, they made modifications to ensure safety.

01:20:01 Airbags seem like another common feature that has always been there.

01:20:05 In fact, they were originally invented in 1968 and were ahead of their time.

01:20:10 They slowly gained popularity, and through safety precautions for cars, they eventually

01:20:15 became mandatory for all cars to have, only in 1998.

01:20:20 They have since developed from just being an airbag within the steering wheel.

01:20:24 Today, depending on the vehicle, they can be located throughout the car, ensuring all

01:20:29 potential passengers will be protected.

01:20:32 Crash sensors connected to an onboard computer detect when a collision occurs and trigger

01:20:37 the bags, inflating within milliseconds and providing a cushioned safety within a blink

01:20:42 of an eye.

01:20:44 It can be difficult to predict the weather, and even more so to determine traction on

01:20:48 the road.

01:20:49 In the late 1960s, anti-lock braking systems, ABS, were implemented in vehicles.

01:20:56 Before that, they had been used in many aircraft, with designs going as far back as 1908.

01:21:02 They soon became a necessity for all vehicles, ensuring traction is maintained on slippery

01:21:07 surfaces and that there is complete control when braking.

01:21:11 Today, ABS has advanced so much that the latest variations ensure further detection when there

01:21:17 are strong crosswinds.

01:21:20 Cruise control, initially invented in 1948, has been in constant development over many

01:21:26 decades.

01:21:27 Today, adaptive cruise control ensures that when the car is cruising at a constant speed

01:21:32 and detects a slower car ahead, it will then adjust the speed to match the car in front.

01:21:38 Other advanced variants may also ensure the car will make a complete stop once identifying

01:21:42 that the car in front has done the same.

01:21:46 It's easy to forget to have your high beams on when driving on the long and lonesome road

01:21:50 for many hours.

01:21:52 Automatic high beams are quickly becoming more common.

01:21:55 High-tech camera modules can easily determine what type of light is passing through and

01:22:00 help ensure when the high beam will be necessary.

01:22:04 Although versions of automatic high beams have been around since the 1950s, they counted

01:22:08 on light-sensitive sensors and were very unreliable.

01:22:12 The new varieties can identify the sources of light, whether it's from the sun, directly

01:22:17 from a car's light, or even from the reflection on a sign, ensuring you won't cause issues

01:22:23 with other drivers.

01:22:25 It's a pain in the neck to have to ensure there isn't anyone creeping into that semi-visible

01:22:30 corner, the blind spot, which causes around 400,000 accidents per year.

01:22:35 Solar sensors within rear bumpers of vehicles and blind spot monitoring systems watch and

01:22:41 identify adjacent lanes.

01:22:43 They alert the driver that a vehicle may be in the lane beside them, whether by flashing

01:22:47 lights on the dash or from beeping sounds.

01:22:50 This way, they help to alleviate the many concerns the blind spot causes.

01:22:55 1.6 million road accidents are caused by texting and driving, and fatigue normally causes up

01:23:02 to 10% of all car accidents per year.

01:23:05 The driver attention monitor helps to alleviate both statistics.

01:23:10 It works through sensors that monitor the car's movements and the amount of steering

01:23:14 corrections to ensure the driver is paying attention to the road.

01:23:18 When the system identifies that the driver isn't completely awake or is slightly distracted

01:23:22 with their phone, it will prompt signals to suggest it's time for a break.

01:23:28 Tires are among the most critical components for your car, with a close relationship with

01:23:32 whatever path you take.

01:23:34 Many safety features rely on the tires themselves for their own independent purposes.

01:23:39 That's why it's super important to ensure the tires are always in top condition.

01:23:44 Tire pressure monitoring systems check the air pressure of all four tires, ensuring you're

01:23:48 aware when they need their pressure increased to avoid the risk of a blowout.

01:23:53 The constant evolution in technologies continues to ensure you stay safe on longer stretches

01:23:58 of the road.

01:24:00 Lane departure warnings focus on the lines on the road, ensuring the car stays within.

01:24:05 Whenever a car starts drifting over a line in the road without signaling to do so, the

01:24:10 camera-based feature identifies and signals to the driver.

01:24:14 The lane-keeping assist feature follows the same method of identifying when the car is

01:24:18 intruding the bordering lane.

01:24:20 When it gets too close, it will readjust the steering and center the car within its appropriate

01:24:25 lane.

01:24:27 Other features in more advanced cars have autonomous driving capabilities.

01:24:32 The Autopilot systems have taken cruise control to the next level.

01:24:36 Not only does it allow the vehicle to steer itself in the intended lane while maintaining

01:24:40 a set speed, but it also changes lanes when required, making the ride more and more efficient.

01:24:47 Some safety features are only just making a trend in car models worldwide.

01:24:51 For example, night vision, using thermographic cameras to look out for pedestrians and animals

01:24:57 nearby.

01:24:58 It goes within the infotainment screen, facing frontwards and identifying objects from their

01:25:03 heat signatures.

01:25:05 It's estimated that there are over 1.4 billion cars in use worldwide, and as the world's

01:25:10 population increases, it's expected that the number of cars will follow suit.

01:25:16 Safety features will continue to adapt further beyond what we know of today.

01:25:21 Infrared headlights will be further adapted to be used in conditions with poor visibility,

01:25:26 like storms, snow, and fog.

01:25:28 They'll be capable of enhancing the visibility of the driver in all conditions without affecting

01:25:33 the sight of passing drivers.

01:25:36 Driver override systems will soon be able to monitor and identify human behavior.

01:25:40 Whether due to reckless conduct on the road or for other safety precautions, cars will

01:25:45 soon have the functionality to take complete control of themselves, ensuring both the passenger's

01:25:51 and the driver's safety.

01:25:53 Augmented reality windshields are in early development already, providing some indicator

01:25:57 reflections from the dash onto the windshield.

01:26:00 So it's quite possible that soon all necessary directions for maps and alerts will appear

01:26:06 right in front of the driver to ensure they never take their eyes off the road.

01:26:11 Airbags will soon not only just be used within a car to ensure the passenger's safety, they

01:26:16 will also activate from the outside of the car once they identify a definitive collision.

01:26:21 The airbags will inflate outwards, covering the entire outside of the car and drastically

01:26:26 reducing its impact.

01:26:28 It may be so advanced that the bodywork of the car won't even need to be buffed out.

01:26:33 The future technology of cars is expected to be so progressive that the cars themselves

01:26:38 will have their own form of communication, not with human drivers, but with other cars.

01:26:44 Just imagine, cars communicating and sharing information as they identify roadblocks, issues

01:26:50 on the road, or disruptive weather patterns.

01:26:52 It will all ensure the most efficient and safest route possible.

01:26:58 Hey, have you ever been vibing out in your room, listening to some of your favorite songs,

01:27:06 admiring the subwoofer of your speaker as it delivers magnificence to your eardrums?

01:27:11 We all have.

01:27:12 But have you ever asked yourself why that same speaker, along with other speakers across

01:27:17 the globe, is almost always black?

01:27:20 Some of you are probably screaming at your screen right now about your speaker being

01:27:24 green, red, or any other color found in the rainbow.

01:27:27 Number one, I said "almost always."

01:27:30 And number two, if you look closely at the gorgeous design of your brightly colored music

01:27:35 player, you'll often find that the speaker beneath it is still colored black.

01:27:40 One possible explanation for this is that the original technology of speakers had a

01:27:45 diaphragm with black particles on it.

01:27:47 So as soon as a sound is amplified, it sends a charge through the diaphragm, and these

01:27:52 black particles are driven upwards.

01:27:55 The carbon particles bouncing and touching the upper membrane of the diaphragm are responsible

01:27:59 for creating some of the distinct sounds from our speakers that we all love so much.

01:28:05 Speaker manufacturers must've gotten tired of their products changing color with prolonged

01:28:10 use, combined with these black particles settling on the upper membrane of the diaphragm.

01:28:15 So their logical solution was to color most speakers black.

01:28:20 Another more practical belief as to why speakers are mostly colored black is that it's a hue

01:28:26 that easily matches up with many types of decor.

01:28:29 Walls, furniture, and clothes all often look quite well when combined with this color,

01:28:35 which is why it's so prevalent everywhere you go.

01:28:38 Listening to music has repeatedly scored in the top 10 pastimes in the US based on research.

01:28:44 Nowadays, you find sound speakers everywhere – in your television, laptop, and your phone

01:28:50 – you can't escape 'em!

01:28:52 But let's take a look at how they started off.

01:28:55 Their origins are in radio and telephone technology.

01:28:59 The first form of a speaker was developed by Johann Philip Rice in 1861.

01:29:05 The German was a self-taught inventor and installed the speaker on his telephone.

01:29:10 It was just about able to reproduce clear tones, but it could also replicate muffled

01:29:15 speech after a few revisions.

01:29:19 Alexander Graham Bell, the inventor of the telephone, decided to try and produce an improved

01:29:24 version of Rice's speaker.

01:29:26 Essentially, Bell and other inventors wanted to make an electrodynamic speaker.

01:29:31 By 1877, it was still yet to exist, but due to the desire of inventors worldwide to change

01:29:38 this, research confirmed that it was extremely possible to make one.

01:29:42 In particular, the work of Wernher von Siemens, who came up with the idea of an electromagnetic

01:29:47 coil-driven speaker, was a driving force in arriving at this conclusion.

01:29:53 Why are there magnets in speakers, you might ask?

01:29:56 Every speaker nowadays has an electric current, something the inventors we're discussing

01:30:01 would never have taken for granted at any point in their lives.

01:30:05 When this electric current is changing, it produces a magnetic field.

01:30:09 To make the panel of the speaker move, magnets are used to create an opposing magnetic field

01:30:15 which creates vibrations.

01:30:17 These vibrations are the sound we end up hearing.

01:30:20 The bigger the magnet, the louder the speaker will be.

01:30:23 Another inventor by the name of Thomas Edison from the US had filed a British patent for

01:30:29 a system using compressed air for an amplifying mechanism.

01:30:33 The first commercial electric loudspeaker saw the light of day only in 1924.

01:30:39 The sound quality produced by this speaker was good enough for motion pictures.

01:30:44 It took nearly 20 years for the next groundbreaking development in the world of loudspeakers.

01:30:49 This came with the arrival of the duplex driver in 1943.

01:30:53 It offered better clarity and coherence at high volumes, which was important in movie

01:30:58 theaters.

01:30:59 Fittingly, it was nicknamed "the voice of the theater."

01:31:03 The duplex driver was immediately tested by the Academy of Motion Picture Arts and Sciences

01:31:08 and instantly made its film house industry standard in 1955.

01:31:13 Until now, this loudspeaker design is still used.

01:31:17 Indeed, the film industry does seem to put a lot of effort into its sound, and so do

01:31:22 the theaters we watch them in.

01:31:24 You may have noticed that these buildings often have thick curtains on the walls.

01:31:29 These are soundproof or acoustic curtains, and both are much thicker than regular curtains.

01:31:34 They will either consist of heavier fabrics that are tightly woven or have better quality

01:31:39 linings.

01:31:40 This means that these curtains will absorb sound and reduce the acoustic reflection off

01:31:45 the ceiling, windows, and flat walls of the room.

01:31:48 This ultimately creates a much better sonic experience.

01:31:52 The carpet floors are so thick in theaters for the same reason.

01:31:55 It helps to trap sound by providing insulation.

01:31:58 From a practical standpoint, this carpet is also set up to prevent the sound of footsteps

01:32:03 during film screenings.

01:32:05 This concept of trapping sound is also the reason why putting a phone inside a cup will

01:32:11 make the phone's speakers seem louder.

01:32:13 Any speaker sitting or suspended in an open space projects its sound in all directions.

01:32:19 As the speaker vibrates to create sound waves, an equal amount of energy leaves from both

01:32:25 the front and the back.

01:32:27 By placing a speaker in some form of enclosure, we can redirect some of the energy that comes

01:32:32 from the back of the speaker and project it forwards.

01:32:35 By putting the speaker in a cup, you're directing the sound more efficiently.

01:32:40 It travels only one way, making it seem louder than what you'd hear when you take it out

01:32:45 of the cup.

01:32:46 Speaking of phones and speakers, ever wonder why your mobile device makes your speaker

01:32:51 produce a buzzing noise?

01:32:53 This can occur when the two gadgets are near one another and your mobile is trying to send

01:32:58 and receive data.

01:32:59 The transfer of information produces electromagnetic disturbances in the medium around the speakers.

01:33:05 It creates noise in the audio, and as a result, you can hear the buzzing sound coming from

01:33:10 the speaker.

01:33:11 A simple way to protect the amazing vibe your speaker is creating for you from this irritating

01:33:17 buzzing noise is just to move your phone away from your speaker.

01:33:21 Or vice versa.

01:33:23 This will eliminate what is officially known as electromagnetic interference.

01:33:29 Research across America shows that, on average, 74% of people own two or more pairs of headphones.

01:33:35 46% of them mention they listen to their headphones for more than 2 hours per day.

01:33:42 Some choose the headphones by their looks, others by the sound quality.

01:33:46 In either case, finding the right pair is important since a lot of people are willing

01:33:51 to spend over $100 on it.

01:33:54 Headphones have become a true fashion accessory.

01:33:57 That's why well-known figures are trying to make an impact in the headphone industry like

01:34:01 it's the fashion industry.

01:34:03 Headmoguls Dr. Dre and Jimmy Iovine came up with the idea for the now world-famous Beats

01:34:09 by Dre Headphones brand.

01:34:12 They were walking along the Pacific Ocean one day in 2006 discussing a sneaker deal

01:34:17 as they had an offer on the table from a major brand in that arena.

01:34:21 After some discussions, they decided they wanted to do something they were more passionate

01:34:26 about and landed on headphones.

01:34:29 The duo's idea turned into a brand that was purchased by Apple in 2014 for $3 billion.

01:34:36 It was the largest deal in Apple's history, and Beats by Dre controlled 70% of the headphone

01:34:41 market at the time of signing.

01:34:43 The move allowed Apple to take over the headphone space.

01:34:47 The release of their popular wireless AirPods headphones in 2016 was another reason it happened.

01:34:54 But how do these popular wireless headphones that many of us own actually work?

01:34:59 These headphones rely on internal batteries to have enough power to remain wireless.

01:35:04 Most often, they have conveniently built-in rechargeable batteries.

01:35:08 But sometimes, they keep going thanks to standard AA or AAA batteries.

01:35:14 They receive wirelessly transmitted signals from their paired audio sources, be it your

01:35:18 phone or laptop.

01:35:21 These signals are encoded by the source device and transmitted most commonly via radio frequencies

01:35:26 or infrared carriers.

01:35:28 The headphones receive the signal and decode it to audio.

01:35:32 And just like that, it's music to your ears!

01:35:36 Okay, I know it's kind of cold to the touch, especially on a freezing winter's day, but

01:35:42 did you know that brass doorknobs actually serve a purpose apart from looking classy

01:35:46 and shiny?

01:35:47 Since it's a copper alloy, brass has antimicrobial properties.

01:35:51 That means it can help get rid of harmful germs and bacteria, sometimes in up to two

01:35:55 hours.

01:35:57 In high-traffic areas, that's all the more useful.

01:35:59 But since brass is much costlier than other metals like nickel and steel, you barely see

01:36:04 these types of doorknobs anymore nowadays.

01:36:07 Speaking of lovely multi-purpose items, most screwdrivers have a tiny little secret of

01:36:11 their own.

01:36:12 They can sometimes be slid through a wrench so that they can be used to create more torque

01:36:17 when twisting.

01:36:18 Not to mention the uses when it comes to bolts in hard-to-reach places.

01:36:23 There's a reason why buttons on women's shirts are for the left-handed, and it has nothing

01:36:27 to do with fashion.

01:36:29 This practice dates back to the times when chambermaids were helping ladies dress themselves,

01:36:33 and it was easier for them to perform their job with this orientation.

01:36:38 Having the buttons placed as such indicated a sign of wealth, so it's easy to imagine

01:36:43 why the practice carried on.

01:36:45 Even though most people dress themselves nowadays.

01:36:48 Next time you receive a package in your mail, take a look at your box cutter.

01:36:52 If it features some diagonal lines on the blade, you're in for a little design perk.

01:36:57 Turns out that these are blades that snap off.

01:37:00 Continuously cutting cardboard can dull the sharp edge of the blade.

01:37:03 To help prevent the need to buy a brand new box cutter, the top segment along the next

01:37:07 line can be broken off to reach a new sharp edge.

01:37:11 To do this, check out the small hole at the base of the tool, sometimes called the blade

01:37:15 snapper.

01:37:17 The people that first came up with this brilliant invention were engineers inspired by the way

01:37:21 chocolate bars are segmented.

01:37:24 Hold on a minute, don't throw away the cardboard package just yet.

01:37:27 Most likely, you'll have some silica gel packets somewhere at the bottom of the box.

01:37:31 Since this gel is basically a drawing tool, it gathers up the moisture out of its environment,

01:37:36 so you can store these packets for further occasions.

01:37:39 Whether you'll need to dry out your phone or some other electrical object, you can place

01:37:43 them in a container next to the silica gel to reduce the damage.

01:37:48 You don't have to be a mechanic to know when a standard car tire needs replacing, since

01:37:52 they come equipped with a neat indicator.

01:37:55 Take a closer look, and you'll see that treads within the tire are a bunch of rubber notches.

01:38:00 When the treads are evened out with the perpendicular bars, it's a sign you need to book an appointment

01:38:05 with your local car service.

01:38:07 It's most likely the tires have lost most of their traction, and may not be safe for

01:38:11 driving any longer.

01:38:13 The upper corners of a car windshield feature textured black dots melted into the glass

01:38:18 edges.

01:38:19 This neat add-on isn't there for design purposes.

01:38:22 It's called Frit Glazing, which means that a special type of ceramic paint is added to

01:38:28 the window for protecting its sealant from UV rays.

01:38:32 It also conceals and creates a coarser surface for the adhesive used to set the window in

01:38:37 place.

01:38:39 Whenever you're up for a drive, check out if there's a small tab under your car's rear

01:38:43 view mirror.

01:38:44 Bet you didn't know it's there to help switch the mirror from daytime to nighttime views.

01:38:50 It uses a prismatic glass technology to blur the reflection and reduce the glare of headlights

01:38:56 behind you in traffic.

01:38:58 People came up with these manually tilted mirrors in the 1930s, but they became standard

01:39:03 somewhere in the 1970s.

01:39:05 While you're in the car, check out the headrests, as you most likely don't know that they carry

01:39:10 a little disguised purpose.

01:39:12 Of course, they're adjustable to accommodate passengers of any height so that they get

01:39:16 the proper support for their heads and necks.

01:39:19 The hidden feature is that they are detachable and come with two very solid metal bars.

01:39:25 Should you ever find yourself stuck in a car and need to make a fast getaway, these bars

01:39:29 come in handy to crack out the car windows.

01:39:33 So you're out for a drive and you're suddenly out of gas.

01:39:36 What I'm about to describe sounds more like a meme than an actual situation bound to happen.

01:39:41 But what if you're in such a hurry that you accidentally drive off with the gas nozzle

01:39:45 still in the tank?

01:39:47 Well, the nozzles have been designed to prevent any hazards from happening, rest assured.

01:39:52 They feature a breakaway device that will allow the hose to separate when taken out

01:39:56 with enough force.

01:39:58 Initially designed in the early 20th century to be worn exclusively by basketball players,

01:40:04 sneakers soon became one of those fashion fundamentals similar to jeans and leather

01:40:08 jackets.

01:40:09 If you take a closer look at them, you'll see they have two extra holes on the side,

01:40:14 similar to the shoelace holes.

01:40:15 They're manufactured as such not only to provide extra ventilation but to allow people to get

01:40:20 extra creative with their laces when wearing the shoes.

01:40:24 Admit it, you've always thought that chopsticks are merged at the end for the sole purpose

01:40:28 of keeping them together until you're ready to dig into your meal.

01:40:31 That may or may not be the whole truth.

01:40:34 Under a more detailed inspection, the wooden tools feature a square-shaped end.

01:40:39 Chopsticks manufactured like this date back to an old Japanese traditional design, which

01:40:44 can help with breaking the ends easily.

01:40:47 The separated end can then be used as a resting block for the chopsticks to keep it more sanitized

01:40:52 in hopes it can be used again, since they won't be touching the table or any other

01:40:56 surface.

01:40:58 Women's bikes have a special design which, surprisingly, has a historical and fashionable

01:41:03 purpose.

01:41:04 The lower frame is for the most part meant to make up for the generally shorter height

01:41:08 of ladies, compared to that of the average gentleman.

01:41:12 While that is the case for handlebars and saddles, the overall frame is lower for an

01:41:16 additional purpose.

01:41:18 Way back when women wore long skirts and dresses all day, every day they needed to make sure

01:41:22 their outfits wouldn't get caught in the frame.

01:41:25 That's how we came up with a lower-framed bicycle, perfectly made for women and their

01:41:29 needs at the time.

01:41:32 The fact that toothpastes are multi-colored is not just a nice perk to make dental hygiene

01:41:37 more fun.

01:41:38 There's a secret meaning related to each of the colors, which dates back to the 1970s.

01:41:44 In those days, people grew more and more interested in their oral health care, and as such, they

01:41:49 were looking for products which could do more than merely clean their teeth.

01:41:54 One company was the pioneer in that regard, adding mouthwash to its toothpaste, meaning

01:41:58 the blue strip.

01:42:00 They later added on the red strip, meant to feature ingredients which helped with gum

01:42:04 care.

01:42:06 Speaking of toothpaste, check the cap next time you open a new tube.

01:42:09 You may be in for a little surprise!

01:42:12 There's a pointed cone shape inside the cap, so you can puncture the seal of the toothpaste

01:42:16 without cutting yourself or ruining your manicure.

01:42:19 Not to mention it's more hygienic since you won't be able to transfer germs or other

01:42:24 bacteria into the product itself.

01:42:27 On the subject of bathroom countertop items, toothbrushes come with a neat add-on hidden

01:42:32 in the bristle patterns.

01:42:33 Apart from making the toothbrush look cooler, they also do come with a practical purpose.

01:42:39 Most toothbrushes come with a pattern of blue bristles intertwined with white ones.

01:42:43 The blue dye is meant to fade out, signaling the time when you need to replace your toothbrush.

01:42:50 Experts say that toothbrushes should be replaced every three to four months, but it does serve

01:42:54 as a great reminder in case you forget.

01:42:57 Still love playing with Lego?

01:42:59 Don't judge.

01:43:00 Hey, it's a great hobby for all ages.

01:43:02 Notice there's a hole on top of the Lego heads?

01:43:04 Behold, you're looking at a safety feature that the people at Lego designed to prevent

01:43:09 choking hazards.

01:43:11 The most dangerous issue should a person swallow any of these pieces is the blocking of the

01:43:15 airways.

01:43:17 Placing a hole inside the Lego head helps the air to flow freely through the piece until

01:43:22 it can be removed safely.

01:43:24 We're now used to all sorts of modern light bulbs, some tubular, some shaped like diamonds,

01:43:29 and some even twisted all together.

01:43:32 Historically, light bulbs were round and the initial shape served a purpose in itself.

01:43:38 It was mainly connected to the fact that glass bulbs were hand-blown, which gave them the

01:43:42 round shape to begin with.

01:43:44 The hidden practical reason was that the light bulb filament needed to be at the same distance

01:43:48 from every surface of the glass sphere.

01:43:51 The easiest way to achieve this was to make the glass in the shape of a globe.

01:43:57 The cylinder on the end of a cable is sitting there, useless as it might seem.

01:44:02 In fact, this is a ferrite bead that assists with many electrical wires to reduce electromagnetic

01:44:09 interference.

01:44:11 Electrical wires act like unintentional antennas, broadcasting the EMI.

01:44:18 There's a reason why the spinning wheel inside the microwave is circular.

01:44:22 A circular object will evenly distribute the heat as opposed to a rectangular and square

01:44:27 one.

01:44:28 When you place containers of these shapes inside, the energy is focused on the corners

01:44:33 rather than spread evenly like in a round container.

01:44:38 The temperature gauge on a toaster is commonly used to determine how crisp you like your

01:44:43 toast, but the other, more specific use for the gauge was for the different types of bread.

01:44:49 White and sweet types of bread heat up much faster as opposed to heavier brown and rye

01:44:54 ones.

01:44:56 The older bread is, the more time it will need in the toaster to ensure the golden brown

01:45:00 results you're looking for.

01:45:04 Toast ovens give you the option of leaving the door ajar when broiling a dish inside.

01:45:10 You probably think the goal here is to help cool down the oven after use.

01:45:14 In reality, its purpose is to focus on cooking the top of the dish and to ensure a crusty

01:45:20 layer.

01:45:21 Controlling the buildup of heat and steam by releasing it through the slightly ajar door

01:45:27 gives you the desired result without cooking the entire dish to a crispy end.

01:45:33 You probably noticed that your dishwasher has specific areas for different types of

01:45:37 cutleries and dishware.

01:45:40 But all the dishware pieces should be facing towards the center and not all in one direction.

01:45:45 What types of foods were on the plates will also determine where they should be located

01:45:50 in the racks.

01:45:52 As the middle of the machine gets the strongest spray, carb-based stains from tomatoes and

01:45:57 potatoes should be placed there.

01:45:59 Detergent is more focused on the outside during the clean, creating a waterfall-like cleanse.

01:46:06 That's why protein-based stains, like from eggs for example, should be stacked there.

01:46:14 Ceiling fans push cool air down on a hot day, circulating the room.

01:46:19 But they can serve you during the winter just as effectively if you flick that switch on

01:46:22 the side or use the pulley.

01:46:25 So if you want to save some money on heating and try to quickly warm up your room on a

01:46:29 cold day, turn the fan on.

01:46:31 It will push the air up and spread the warm air around, more effectively warming the room

01:46:36 up.

01:46:39 Do you still use sticky notes instead of those fancy new apps on all possible gadgets?

01:46:44 Welcome to the club.

01:46:45 Regardless of what you use them for, they can annoyingly curl up.

01:46:49 If you've had this issue, it's because you've peeled them from the bottom upwards.

01:46:54 Doing it this way causes the curling.

01:46:57 Peeling them from the side will ensure they remain flat, ready to remind you of your daily

01:47:01 tasks.

01:47:02 Did you know that can openers weren't invented until 50 years after preservation cans had

01:47:09 been readily available?

01:47:11 So how would it be possible to open a can?

01:47:14 There are a couple of alternative methods just in case you've misplaced your trusty

01:47:18 opener.

01:47:19 All you need is a metal spoon.

01:47:21 Set the can down on the counter.

01:47:24 Hold onto it firmly and grasp the head of the spoon tightly.

01:47:28 Apply pressure and vigorously rub the edge of the can's top over a small area.

01:47:34 It takes time, but as you continuously rub, a small indentation soon opens a hole.

01:47:39 Once the hole is wide enough for the spoon's tip, pry the lid upwards and keep going along

01:47:44 the edges until you can finally access the hard-earned meal within.

01:47:49 Most toilets rely on water pressure and gravity to function, so a power outage will not affect

01:47:55 them.

01:47:56 But if yours does need electricity to function, you must be worried about using it when the

01:48:01 power is out.

01:48:03 The good news is the power is only used to fill the toilet and not to flush it.

01:48:07 As the flushing mechanism will still work, open the toilet tank and pour in a couple

01:48:12 of gallons and you're free to flush away whatever you need to.

01:48:17 Blockages in shower drains occur over a long period of time.

01:48:21 It's inevitable.

01:48:22 We lose 50 to 100 hairs a day, and many of them will endeavor to reside within our shower

01:48:27 drains.

01:48:29 Hair only forms the foundations of the blockage, and this attracts the buildup of various other

01:48:34 things.

01:48:35 A great life hack is to use your vacuum cleaner and put the nozzle in the hole once removing

01:48:39 the plug.

01:48:40 Apply a wet cloth around the nozzle, ensuring air cannot escape.

01:48:45 The vacuum will suck up the blockages a lot easier.

01:48:48 This will help avoid any extra costs from plumbers, as they themselves use this technique.

01:48:55 To make your candles last longer, trim their wicks multiple times and keep them as far

01:49:00 away from water and moist as possible.

01:49:03 It will guarantee that your candle's wax stays firm and steady, and continues to burn

01:49:08 slower for a longer period of time.

01:49:12 The empty space between the panes of the oven door is there for a reason.

01:49:16 You can stick a brush in there to clean the oven door glass.

01:49:20 It's easy to access this space through the bottom of the door, open the lower shelf,

01:49:24 then push the brush through the hole.

01:49:28 While you're parking in a garage, you might find it difficult to determine how close to

01:49:32 it you need to be.

01:49:34 Not all cars have sensors ensuring you keep the right distance before the bumper makes

01:49:38 an indentation on the wall.

01:49:41 Tying a rope with a tennis ball from the ceiling at the right distance will help you learn

01:49:45 the best distance to park from the wall.

01:49:49 We've all been told to loosen a lock with WD-40 or lubricant.

01:49:53 Yes, we all know we should have these around the house.

01:49:56 But in case you don't, a great alternative is drawing with a grey lead pencil along the

01:50:01 edges of the key and then putting it into the lock.

01:50:05 Continue doing this until the keyhole has been adequately lubricated and the key functions

01:50:09 smoothly.

01:50:12 Pliers are prone to damage when you use them to adjust faucets and shower heads and are

01:50:16 also difficult to grip.

01:50:19 Take a couple of pieces from the end of an old garden hose and attach them to the jaws

01:50:23 of the pliers.

01:50:25 You'll find a huge improvement with grip and will avoid wear and tear.

01:50:30 You can find a good use for discarded rubber for different things around the house.

01:50:35 If fed up with tightening or loosening with a screwdriver, try using a simple rubber band.

01:50:41 Place part of it into the screw grip and the screwdriver will have far greater traction.

01:50:48 Moving cement blocks isn't safe for your lower back.

01:50:51 Even with a wheelbarrow, it can be a risky process to place the cement onto the ground

01:50:55 without causing damage.

01:50:57 Three simple cylinder pipes can make a world of difference, regardless of the size of the

01:51:01 block.

01:51:03 Try lifting the edge onto the first pipe with a pry bar, then pushing and maneuvering as

01:51:08 you gradually direct the three pipes towards the desired location.

01:51:12 Just make sure you're not doing this on a slope.

01:51:17 That first strike on a nail can be a great success or will result in a throbbing thumb.

01:51:22 A bobby pin is perfectly shaped to hold a nail in place, allowing for your hand to be

01:51:27 clear out of harm's way and for you to strike the nail without fear.

01:51:33 Use a crayon instead of a pen or pencil while working with a wet saw to ensure the markings

01:51:39 are not removed.

01:51:40 They will also be easier to see under the murky water.

01:51:45 Checking the drains on the roof and determining when they need to be cleaned can take a lot

01:51:50 of time.

01:51:52 Using duct tape, attach a mirror on the end of a long broom and review whether the drains

01:51:57 need to be cleaned.

01:51:59 To further assist with your balance as you check on the gutters, attach a pair of old

01:52:04 trainers to the end of the ladder.

01:52:06 The spread of the shoe and its grip will ensure a further level of safety.

01:52:11 Liquid caulk normally comes in huge tubes, so you can never use it all at once.

01:52:16 The hardened tips of liquid caulk create blockages.

01:52:20 Grab a used cork and drill through it to make a perfect lid, concealing the liquid caulk.

01:52:25 Now it's ready to be used again with no blockages.

01:52:30 Crackers have holes in them to stop them cracking and breaking during baking.

01:52:34 If the holes weren't there, steam would build up inside the cracker and make it collapse.

01:52:40 Take a look at a soda bottle and you'll notice a disc inside the bottle cap.

01:52:45 This helps seal in the liquid and the drink's fizz, stopping it from going flat.

01:52:50 The long neck on your soda bottle is designed like that to encourage you to hold it there.

01:52:56 That way, the heat from your hand will only warm that top bit of the bottle instead of

01:53:00 heating up your whole drink.

01:53:03 It's always hard to see your food in the microwave because of that pesky black grate on the window,

01:53:08 but it's there to stop harmful microwaves from escaping.

01:53:12 Called the Faraday shield, it protects you as well as ensures that your food cooks properly.

01:53:18 Food items like chips come with about 43% nitrogen inside their package.

01:53:23 It might seem like they sell you half a bag of air, but it's exactly the opposite.

01:53:28 Oxygen, the gas we breathe, would react with the chips inside the bag and make them go

01:53:33 rancid quickly.

01:53:35 It's called oxidizing for a reason.

01:53:37 Nitrogen, on the other hand, is an inert gas that helps keep the foodstuffs fresh and also

01:53:43 protects them from breaking during transportation.

01:53:46 A bag of chips that has this gas cushion lets you enjoy your crunchies without them turning

01:53:51 to potato crumbs.

01:53:54 Donuts have holes in them so that the inside and outside cook evenly.

01:53:58 Before the holes were added, the inside would often be greasy and doughy while the outside

01:54:03 was crisp.

01:54:05 Margins on paper aren't for writing in dates and numbering lists.

01:54:10 They were originally added to serve a protective function.

01:54:13 Back in the day, rats used to be a pesky problem in people's homes and paper was one of their

01:54:19 favorite snacks.

01:54:21 Margins were added as a safeguard so that the rats would nibble on blank paper rather

01:54:25 than taking a bite out of your important work.

01:54:29 That hole in your hollow lollipop stick isn't to prevent choking should it ever be swallowed.

01:54:34 It's actually there to keep the candy in place.

01:54:37 Excess candy flows into the hollow tube and the hole, which when it hardens, keeps the

01:54:43 pop in place.

01:54:44 If it was a smooth stick, the candy would slide off easily.

01:54:48 Vacuums come with so many attachments, but do any of us really know what that one with

01:54:53 long bristles is for?

01:54:55 It's for dusting and is perfect for cleaning framed art, blinds, and lampshades.

01:55:01 What's the difference between a wooden hanger and a plastic one?

01:55:05 Aside from helping keep your clothes in shape, cedar wood hangers also repel moths and bugs.

01:55:12 Salt isn't just used for cooking.

01:55:14 It can get rid of tough smells.

01:55:16 Rubbing salt on your fingertips after chopping garlic should remove the smell.

01:55:21 It also works on shoes.

01:55:24 Toasters have a secret slide in the bottom that can be removed, so you can clean out

01:55:28 all those annoying breadcrumbs.

01:55:31 If you ever had problems with popping chocolates from the box, look at those little holes around

01:55:36 them.

01:55:37 They're there to help you.

01:55:39 If you push a hole right next to the candy, it'll jump out easily.

01:55:43 When you take a sip from a coffee cup with a lid, it decreases air pressure inside the

01:55:48 cup so air tries to get in.

01:55:51 The tiny hole on the lid allows air to enter that way, so liquid can smoothly pour out

01:55:57 the main hole.

01:55:59 More on beverage lids.

01:56:01 The small button on them let restaurant workers and customers, too, understand what's in

01:56:06 a cup.

01:56:07 Near each button, there's a name.

01:56:09 Just look at which one is pushed down.

01:56:12 The numbers on the fruit stickers tell you how exactly they were grown.

01:56:17 If there are four digits and the first is four or three, the fruit has been sprayed

01:56:22 with pesticides.

01:56:24 If there are five digits and the first is nine, the fruit has been grown organically.

01:56:30 If there are five digits and the first is eight, the fruit has been genetically modified.

01:56:36 When you're on your way back to the car after bagging up everything you bought, use

01:56:41 loops on a shopping cart to hang the bags.

01:56:44 Now softer items like bread, eggs, fruit, and veggies won't get squashed by the heavier

01:56:50 goods.

01:56:52 If you don't have anyone to hold the other end of your tape measure when you try to measure

01:56:56 something, tap a nail on it.

01:56:59 Now simply hook your tape on it using the tiny hole all tape measures have.

01:57:05 The square-shaped spoon that goes with a McFlurry helps to mix the ice cream toppings through

01:57:10 the dessert.

01:57:11 The spoon hooks directly to a machine and spins around.

01:57:16 Padlocks that are used outside quickly get out of order because of rain.

01:57:21 See this little hole in the bottom?

01:57:23 It's made for pouring engine oil inside.

01:57:26 Do this and the key will again turn in the lock without any difficulty.

01:57:31 You keep banging the bottom of a glass ketchup jar but nothing's coming out.

01:57:36 Here's a little tip, turn your ketchup bottle at an angle and tap on the middle of the neck.

01:57:42 In many fast food restaurants, customers fill tiny folded paper cups to get a portion of

01:57:48 ketchup or mustard.

01:57:50 Here's the news, the cups are supposed to unfold and turn into small paper platters

01:57:55 to hold a great deal more sauce.

01:57:58 That little hole on the handle of a pot or a frying pan isn't just for hanging them

01:58:03 on the wall.

01:58:04 During cooking, put the end of your utensil in the hole and it'll be propped over the

01:58:09 pot to save your kitchen from extra mess.

01:58:12 The blue or any other dark color bristles on your toothbrush are meant to remind you

01:58:17 when it's time to get a new one.

01:58:19 If you see that bristles have become pale, change the toothbrush or its head.

01:58:25 An extra hole at the upper part of the sink has multiple hidden functions.

01:58:29 First, in case someone forgets to close the tap, the water won't overflow and the bathroom

01:58:35 won't get flooded.

01:58:37 Second, thanks to that hole, the water drains faster as it gives an escape for the air,

01:58:43 helping the water flow down.

01:58:45 Most metallic zippers have a hidden lock inside them to save you from awkward situations such

01:58:50 as an undone fly.

01:58:52 Don't leave the zipper handle in an upward position.

01:58:55 When you pull it downwards, it automatically locks.

01:58:59 It's all thanks to those tiny grooves hidden underneath the handle.

01:59:04 Spoiled milk emits gases, like most foods when they go off.

01:59:08 A classic plastic milk jug has a concave shape on one side.

01:59:13 So when the gases expand inside the jug, it expands too, and the concave shape curves

01:59:19 out.

01:59:20 Also, if you want to save some milk for later and freeze it, the jug will expand when the

01:59:24 milk gets solid as well, occupying more space in a jug.

01:59:29 Bath foam isn't only for fun or a nice smell.

01:59:33 It also helps regulate the temperature.

01:59:35 The bubbles keep the water hot, so you can enjoy a bath a bit longer.

01:59:39 Anyway, it works for acrylic bathtubs only.

01:59:43 Those made of metal lose heat really fast either way.

01:59:47 Tea cups and mugs have little grooves on the bottom on purpose.

01:59:51 They're designed for washing machines.

01:59:53 The grooves let the water flow and not spill over your feet when you take the cup out.

01:59:58 Also, those grooves let the air flow so the cup doesn't crack even if the tea is scalding.

02:00:06 A point on an ointment cap is there for a reason too.

02:00:10 Most tubes are usually sealed with foil, and it's better to avoid opening it with fingers

02:00:15 unless you're ready to say goodbye to your nails.

02:00:17 A point easily opens even the most safely sealed tube.

02:00:23 Escalator brushes aren't for keeping your shoes clean and polished.

02:00:26 It might be tough to apply wax right on that brush while the escalator's on the move.

02:00:31 It's for your safety.

02:00:32 Brushes won't let you come close to the edge, so a long coat or bootcut jeans won't end

02:00:37 up in between the steps.

02:00:41 All Tic Tac containers are designed to dispense one Tic Tac every time you open it.

02:00:46 The lid has the same shape as the candy.

02:00:49 Turn the container upside down, gently shake it, and slowly open it.

02:00:54 You'll notice only one candy stuck between those lid grooves.

02:00:58 So if you just open the container and shake it until five or even more candies fall into

02:01:03 your mouth, it means you've been eating Tic Tacs wrong all this time.

02:01:08 The pom-pom on top of your beanie wasn't put there as a fashion accessory.

02:01:13 The pom-pom was originally added to the hat to prevent sailors from banging their heads

02:01:17 on the ceilings of the ships that were too low.

02:01:21 You know, there are all sorts of amazing things you can do with products already lying around

02:01:27 the house that were meant for other things.

02:01:30 We'll explore some of those plus everyday items that have other purposes you may not

02:01:35 be aware of.

02:01:36 I'm also in a silly mood, so hey, let's have some fun!

02:01:41 Many pairs of kitchen scissors today have a serrated opening where the handles and blades

02:01:46 meet.

02:01:47 You can use this as an herb stripper to de-stem difficult herbs like thyme, rosemary, and

02:01:53 chives.

02:01:54 Saves you a lot of time trying to pick the leaves off by hand.

02:01:57 And if you're short of a vase, you could present roses to your significant other this

02:02:02 way.

02:02:03 Just be careful when you're pointing the sharp end.

02:02:07 The metal tab on soda cans can be flipped around.

02:02:10 You can slip a straw in place so you don't have to hold it up to your mouth.

02:02:14 This stay-on tab replaced the pull-ring tab created in the early 60s.

02:02:19 You remember those, don't you?

02:02:21 Those could be quite sharp and easily discarded where they could be a menace for others.

02:02:26 Now you can pop your straw straight into one.

02:02:30 You means you can produce some bubbles and make a mess!

02:02:35 Sometimes when you purchase an article of clothing, you receive a plastic baggie with

02:02:39 an extra button and a swash of fabric.

02:02:42 While the fabric is clearly used to patch holes, it can also be used to test the effects

02:02:47 of various cleaners on certain surfaces.

02:02:50 It's handy too to test wash cycles before using them to wash the whole garment.

02:02:56 And if you want to clean your nose with it, that suggestion never came from me.

02:03:01 You can use a screwdriver for leverage if you're having trouble lifting or moving

02:03:06 something.

02:03:07 Some also have a hexagonal-shaped handle that fits inside a wrench or spanner.

02:03:12 You can use it to improve torque and, again, for leverage.

02:03:15 A little easier on your hands.

02:03:18 Some of us aren't that strong.

02:03:19 Or maybe that's just me.

02:03:22 Super bands are great for many things, but if you have a bottle that's hard to open,

02:03:27 you can wrap the band around it for a better grip.

02:03:31 Escalators have those fluffy black brushes for a similar reason that some have yellow

02:03:36 lines on their steps.

02:03:38 To try and deter people from getting too close to dangerous places.

02:03:42 People don't always take notice, and sometimes clothing can drape close to a point where

02:03:47 the step meets the edge or skirt.

02:03:50 The brush is a little barrier to help prevent this from happening.

02:03:54 They can also catch bits of fluff and prevent other small things from falling down into

02:03:59 the gaps.

02:04:01 Your average pair of jeans has several features that are both functional and somewhat sentimental.

02:04:07 The metal rivets around the pockets help secure the stress points.

02:04:11 This ensures they last a bit longer than average, though not all jeans have them.

02:04:17 Many still have a tiny pocket directly above the main pocket.

02:04:22 This was originally meant to hold a pocket watch.

02:04:25 Even though pocket watches are mostly a thing of the past, many people still use this space

02:04:30 to store coins, rings, or even a portable USB.

02:04:36 This may seem a little obvious, but if you've ever wondered what all the notches are in

02:04:40 a car tire, it's for traction on the road.

02:04:43 However, they're also a good indicator if your tire is getting too worn down.

02:04:49 If those notches aren't so deep anymore and are almost flush with the road, it's

02:04:54 time to replace them.

02:04:56 If you don't, the next time you try to stop suddenly at a stop sign, you might be surprised

02:05:01 to find your car has turned into a giant roller skate.

02:05:06 Those takeaway containers most associated with Chinese restaurants are designed to not

02:05:11 only carry your food home, but to store them in the fridge.

02:05:15 They double as a plate, as you can eat straight out of them and don't have to worry about

02:05:20 dirty dishes.

02:05:22 They were actually patented way back in 1894 to transport freshly shucked oysters and were

02:05:29 known as oyster pails.

02:05:31 They were later adapted to use as leak-proof containers for food.

02:05:36 While you're sitting on an airplane and looking out the window, you may have noticed

02:05:40 those little holes, or in some instances, a small singular opening near the bottom.

02:05:46 This is called a breather hole, and no, it's not for you.

02:05:49 It's designed to equalize the difference in air pressure which builds up between the

02:05:54 pressurized cabin and the atmosphere outside, especially during high altitudes.

02:06:00 It also releases moisture from between the panes to avoid frost from forming on the windows

02:06:05 and obstructing that all-important view.

02:06:08 Sorry, but it looks like you won't be drawing a smiley face on it any time soon.

02:06:14 This was first introduced way back in 1956 by a company in Japan.

02:06:19 Pretty cool, huh?

02:06:20 They got their inspiration from snap-off rows on chocolate bars.

02:06:25 Just don't get the two mixed up.

02:06:27 One doesn't taste good.

02:06:30 When it comes to measuring tape, almost every reel has an empty slot in the metallic end.

02:06:35 This is called a nail grab, so you can attach it to a nail or screw.

02:06:40 A handy trick to do measurements without requiring someone else to hold it in place.

02:06:46 Very nifty.

02:06:49 Bobby pins have grooves on one side to hold your hair in place better.

02:06:53 Crazy notion, huh?

02:06:55 The straight side goes face up while the grooves go down against your head.

02:07:00 They're called bobby pins because of the bobbed hairstyle which was popular in the

02:07:04 1920s, though the pins were invented in the 19th century.

02:07:09 The look is gone, but the pins remain.

02:07:12 Please take them out before you wash your hair as they don't look great stuck to your

02:07:16 fingers.

02:07:18 If you've been in a car or a bus and noticed the textured black dots baked into the black

02:07:23 edges, you've probably worked out that it's not there for its pretty looks.

02:07:28 It's called frit, a ceramic paint.

02:07:31 Its main purpose is to protect the window from ultraviolet rays.

02:07:35 It also creates a rough surface for the adhesive to cling to.

02:07:40 If you see a pink lump of adhesive in the corner, please do not touch it.

02:07:45 It's actually someone's old bubble gum.

02:07:49 If you take a look at the bottom of the lock, chances are you'll see one or two little

02:07:54 holes.

02:07:55 This is to let water out from the inside that may have been trapped due to rain.

02:08:00 This mini-draining capability prevents the inner working from rusting over or freezing

02:08:05 in place if the weather's very cold.

02:08:08 If in another situation the lock becomes stuck, you can ease an oil-based product inside to

02:08:15 lubricate the lock and get it working again.

02:08:19 If you've lost the key and want to ease your frustrations, you can yell into the holes.

02:08:24 It won't do anything to unlock it, but it may help you feel a little better.

02:08:30 Some dress shirts have a fabric loop on the back.

02:08:33 You guessed it, it's used for hanging the shirt up.

02:08:36 The loops were reportedly first used in the Navy as it was easy to simply hang them on

02:08:41 the wall.

02:08:43 During the 1960s in colleges, the fashion of the day was to wear the shirt buttoned

02:08:48 all the way to the top, which made them difficult to hang.

02:08:52 So designers began putting the loop on the back.

02:08:55 If the student removed the loop, it signified that they were going steady in a relationship.

02:09:00 Unless your friend ripped one off for a prank, now everyone's asking whom you're with.

02:09:06 There's a little more to this story, but we haven't got time to "hang around."

02:09:12 And yes, that's a bad pun.

02:09:14 On purpose.

02:09:15 It's what I do.

02:09:17 Ever wondered why coins have those little ridges along the edge?

02:09:20 It's a leftover from earlier times when they were worth more.

02:09:25 Counterfeiters could easily file the edges off to sell as gold or silver coins to make

02:09:30 some profit.

02:09:31 The ridges were created so it was much easier to tell which of the coins had been altered.

02:09:36 It's not needed today, but the coins still have that altered style.

02:09:41 If you ever get really bored, you could try counting how many ridges there are.

02:09:47 Actually that is a very boring idea.

02:09:49 Forget that and watch another Bright Side video instead!

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