Amazing entertainment video

Transcript

00:00Hand-filling a mattress with helium make a person float in mid-air while sleeping.

00:04We all know that helium is a colorless, odorless, and extremely light monoatomic gas.

00:10When a balloon is filled with enough helium, it can float in the air.

00:14If helium is pumped into bicycle tires and weighed on an electronic scale, the tires

00:18filled with helium are found to be lighter than when they have no air.

00:22Dropping the tires from the same height, the helium-filled tires bounce higher than those

00:26filled with air.

00:27If helium is pumped into a soccer ball, not only does the ball's elasticity increase

00:32significantly, but its lighter weight also allows even those with no professional soccer

00:37training to easily kick a curved free kick.

00:41This leads us to a bold idea.

00:42If helium is pumped into a mattress, can a person lying on it float in mid-air?

00:45First, we weigh the mattress on an electronic scale.

00:49Then, we pump a large amount of helium into the mattress.

00:53However, as more helium is pumped in, the mattress does not float as we imagined.

00:58The buoyancy of the helium ultimately does not overcome the weight of the mattress.

01:03Next, we take a lighter paddleboard and continue the experiment outdoors.

01:08As more helium is pumped in, the paddleboard shows significant changes.

01:12From this, we conclude that helium can indeed provide buoyant force.

01:17For something to float, the buoyant force must be greater than the weight of the object.