Des Illusions D'optique Si Hallucinantes Qu'elles Vous Feront Douter De La Réalité

Sympa

Préparez-vous à avoir l'esprit époustouflé par des illusions d'optique si hallucinantes qu'elles vous feront remettre en question la réalité elle-même ! Regardez des objets du quotidien se tordre, tourner et se transformer sous vos yeux, défiant votre perception à chaque instant. Ces illusions ne sont pas seulement un régal pour les yeux, ce sont des casse-têtes cérébraux qui vous feront vous demander ce qui est réel et ce qui n'est qu'un astucieux tour de passe-passe visuel. Plongez avec nous dans une expérience comme aucune autre, où rien n'est ce qu'il paraît être. Croyez-nous, vous n'en croirez pas vos yeux !  Animation créée par Sympa. ---------------------------------------------------------------------------------------- Musique par Epidemic Sound https://www.epidemicsound.com   Pour ne rien perdre de Sympa, abonnez-vous!: https://goo.gl/6E4Xna​ ---------------------------------------------------------------------------------------- Nos réseaux sociaux : Facebook: https://www.facebook.com/sympasympacom/ Instagram: https://www.instagram.com/sympa.officiel/  Stock de fichiers (photos, vidéos et autres): https://www.depositphotos.com https://www.shutterstock.com https://www.eastnews.ru ----------------------------------------------------------------------------------------  Si tu en veux encore plus, fais un tour ici:  http://sympa-sympa.com

Transcript

00:00Look at these lines very carefully. What can you say about them?

00:05I bet these rows seem to tilt alternately.

00:08To be honest, I felt a little stunned just by looking at them.

00:12But in reality, the lines are parallel.

00:15It is the pattern of the rows that creates this incredible optical illusion.

00:19And if you don't believe me, pause the video and check for yourself.

00:25Now, what do you think about these rings?

00:27They seem to turn in different directions.

00:29But in reality, the rings never change position.

00:33The image is fixed.

00:34The only thing that changes is the color of the petals.

00:38What you see now is what is called a color context illusion.

00:43The top circle seems to be darker than the bottom one, doesn't it?

00:47In reality, these circles are of the same shade of red.

00:51This illusion proves that the color of the background can influence the way our brain perceives the color of an object.

00:58Despite the appearances, this turning disc optical illusion is not a gif.

01:03It is an immobile image, even if the snakes seem to turn in front of your eyes.

01:10This optical illusion is based on the way your eyes process images.

01:15They scan it several times, constantly self-adjusting.

01:19Now, here's what you can try.

01:22Focus intensely on a single snake.

01:25And voila! All the movement has stopped.

01:29This next image will amaze you.

01:32Even if we already know how this principle works, our eyes continue to deceive us,

01:36making us believe that the square on the left is much clearer than the one on the right,

01:40when in reality, their shades are exactly the same.

01:44You can check.

01:45Remember, everything is a matter of background.

01:49Here is the so-called coffee wall illusion.

01:51The rows in this image seem to be tilted up or down, don't they?

01:56But the horizontal lines are actually all parallel.

01:59If you want proof, pause the video and cover the top and bottom of a row of squares with a piece of paper.

02:05You will see that everything is straight.

02:07Look at the movement of these little blue and yellow lines.

02:10They seem to move alternately, like little feet that tap, tap, tap.

02:16This effect becomes even more pronounced if you do not look directly at the feet, but fix the space between them.

02:24Well, it's still an optical illusion.

02:27In reality, the movement of these small multicolored lines is always simultaneous.

02:34Look at this.

02:35Hmm, is it a little video?

02:37It looks like it.

02:39But if you focus, you will realize that the snowboarder does not really move forward.

02:45This illusion requires four images.

02:47The first two are the consecutive images of a video, and the next two repeat the first ones, but in negative.

02:55The reason why this illusion works is the simultaneous inversion of the contrast and the direction of the movement,

03:01which makes us believe that the snowboarder is moving continuously.

03:06This pattern is stationary.

03:08And yet, it seems to extend, its central part becoming larger and larger under your eyes.

03:14The effect is even stronger if you do not look directly at the image.

03:18The most confusing thing here is that not everyone can perceive this illusion.

03:23And no expert has yet understood why.

03:27Here is a rotating set made up of blue crosses and three yellow dots.

03:32Try to focus on the center, on this flashing red-green dot.

03:37It's magic, the yellow dots disappear from time to time.

03:41They disappear one by one, in pairs, or all three simultaneously, right?

03:46Well, not really, it's just an illusion.

03:49In reality, the three yellow dots are present all the time, believe me.

03:55Look at this rotating thing.

03:58It looks like a three-dimensional object, like a spinning top.

04:01But in reality, it is only an optical illusion created by the rotation of certain figures.

04:07You may not perceive the third dimension of the first blow.

04:11To get there, try to imagine a rotating crater.

04:16In this image, we see tracks of iron and two yellow lines.

04:21The one at the top is undoubtedly longer than the one at the bottom.

04:24But if you look closer, you will realize that the two lines have exactly the same length.

04:29This illusion is based on our perception.

04:32We tend to see this image with a linear perspective.

04:35And this makes us believe that the yellow line at the top is longer than the one at the bottom.

04:41When we look at this optical illusion,

04:44we have the impression that the background pattern revolves around a circle.

04:48In reality, the background and the circle remain completely still.

04:53But the effect is somewhat hypnotizing.

04:57The following illusion is rather cool,

04:59even if not everyone can see it at first glance.

05:02Follow the red dot with your gaze.

05:05Keep in mind that turning your head could help you.

05:09You will see that some of the squares in the background begin to move.

05:13Of course, in reality, they all remain still.

05:16The effect can be ephemeral for you, sometimes strong, sometimes absent.

05:20In any case, all the movement here, except for the moving red dot, is completely illusory.

05:26Look at this image.

05:28Are you sure that the circles do not move?

05:31Indeed, they seem to wave a bit like waves.

05:34This is due to a shift in the way we deal with visual information.

05:39When your eyes go from one part of the image to another,

05:42your brain believes that there is a movement.

05:45Oh oh, it looks like your brain is not as reliable as you thought.

05:49Frankly, this optical illusion has left me stunned and slightly confused.

05:53Look, the colors seem to swirl, don't they?

05:57But it's a fixed image.

05:59The effect is created by the combination of patterns and colors.

06:04To read the hidden secret message in this image,

06:07try to blur your vision a bit.

06:09To do this, you can slightly blink or fold your eyes.

06:13And there you go, the secret message is

06:16HIDE AND SEEK

06:18But if you look closer, the words will disappear completely.

06:23Look at this image in rotation.

06:25The wheel that forms the dark and light sectors turns in the direction of the needles of a watch.

06:30And the rays turn in the opposite direction of the needles of a watch, don't they?

06:34Now focus on the image by stabilizing your gaze.

06:38The rays are actually motionless.

06:41This image is also quite confusing.

06:44Can you tell me if the smallest point of this black and white illusion comes out or points inward?

06:50Contrasted lines do not allow us to determine it, so go figure.

06:55Another optical illusion that will question your perception of space.

07:00Which of these windows is the largest, in your opinion?

07:04At first glance, it seems that the one on the right is much larger than the other.

07:08But in reality, they are not only exactly the same size,

07:12but their upper and lower parts are perfectly aligned.

07:16Incredible!

07:17As soon as you look at this image, these four lozenges immediately jump out to your eyes.

07:22Interesting fact, no line creates these shapes.

07:25It is simply the contrast between black and white that makes your brain believe that lines exist.

07:31Some of the most misleading optical illusions can make your head spin.

07:35For example, let's take this one.

07:38On the left, the red squares seem to be deformed and twisted.

07:42But on the right, where all this strange arrangement of black and white lines has almost disappeared,

07:47we see that the red squares are perfectly straight and regular.

07:52Here is now the most brilliant of all the illusions.

07:55Look at these towers.

07:56Does one of them lean more than the other?

07:58But yes, of course, it is the one on the right.

08:01In fact, the appearances are misleading, because it is false.

08:04The two images are identical.

08:06It is the way they are positioned, one next to the other,

08:09that gives the impression that the one on the right is more inclined.

08:13Now, look at this image.

08:15Would you believe me if I told you that the lines that make up these squares are perfectly straight?

08:20Yes, all of them.

08:21Even the one in the middle.

08:23The mini squares inside the squares give the impression that the lines are curved.

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