Name: 音速を体で壊したら？ (What If You Break The Speed Of Sound With Your Body?)
Uploaded: 2021-01-14T08:19:40.000Z
Duration: 4 min 25 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

Blocko: Hey there, welcome to Life Noggin.

Imagine what would happen if you went speeding through a wall.

Humans have been breaking through the sound barrier for decades, but what exactly does

Well, when a plane approaches the speed of sound it encounters an invisible wall of resistance.

This is known as the sound barrier and it occurs when molecules in the air become powerfully

Breaking through this barrier at the speed of sound, or supersonic speeds, may sound

terribly exhilarating, but inside a modern jet, the ride is smooth and barely noticeable.

Not even the sonic boom, created from the rapid change in pressure, can be heard from

Still, that doesn't mean there aren't risks.

While supersonic speeds aren't enough to kill humans on their own, rapid acceleration

As a pilot picks up speed, their body becomes pummelled by an accelerative pressure called

At their worst, these forces can cause broken bones and burst blood vessels.

But perhaps the most dangerous situation is when a g-force drives a pilot's blood down

into their feet and away from their brains, causing loss of vision, loss of consciousness

Today, pilots wear oxygen masks to breathe with anti G-suits around their legs to stop

They are also taught to special breathing techniques to keep their lungs full and muscle

squeezing exercises to keep blood in their brains.

But here's thing: it's not just pilots that can do this.

Exactly sixty-five years after the first aircraft achieved this feat, Felix Baumgartner became

the first human to do the same with only his body.

After seven years of careful preparation, the ex-military parachutist began a free fall

from the edge of space, that would not only break eight world records, but the sound barrier

itself, reaching a top speed that was 75 mph faster than the speed of sound.

At this velocity, scientists worried about internal injury from passing sound waves or

Unlike modern aircrafts, humans aren't designed for supersonic travel, and without the safety

of a pressurised, wind-protected vehicle, no one knew what would happen.

24 miles above Earth, where Felix started, temperatures are low enough to cause hypothermia.

That's why Felix's airtight suit and helmet were so important, because if even one crack

One of the scariest moments in the fall was when Felix entered a flat spin.

This is when the body rotates out of control, sometimes reaching 120 revolutions per minute

and creating up to 22 times the force of gravity.

When this happens to a free-falling human, blood is pushed into the head and feet, potentially

causing burst eyeballs, mental confusion, loss of vision, consciousness, and even death.

Luckily, Felix was able to right himself and land safely on the ground, taking a big step

What's more, in the half a minute Felix spent at supersonic speeds, he felt and heard

So even though his fall came with a whole host of hazards, it turns out, breaking the

Still, unless you have extensive training and all the right equipment, it's probably

safest to stick to normal speeds and leave the supersonic business with daredevil animations

So do you have any questions that you really want to be made into a video?

Let me know now in the comment section below, we're taking suggestions for future episodes.

Curious to know what would happen in your body if you spent 24 hours on a plane?

Don't forget to keep on Zhoomin Zhoomin!!!