Name: 液体窒素のプールに落ちたらどうなるのか？ (What Happens If You Fall Into a Pool of Liquid Nitrogen?)
Uploaded: 2021-01-14T10:40:21.000Z
Duration: 4 min 22 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：

仮定法過去

Or even tried to cool down with it on a hot day?

Liquid nitrogen may look like a lot of fun

when you're watching people dump everyday objects into it,

but it's actually a very dangerous substance.

Did you know that hundreds of people voluntarily jumped

It's true! It happened at a promotional pool party in 2013.

By the end of the event, one person was in a coma,

and eight others had been rushed to the hospital.

Before we go jumping into a whole pool of it,

let's get to know liquid nitrogen a little better.

Liquid nitrogen, or LN2 as the cool kids call it,

is nonflammable, odorless, and colorless;

and it creates a notorious fog whenever  it's exposed to room temperature air.

It can be used to freeze and transport food products,

and to remove skin abnormalities, among other things.

Recently, its use has been embraced by the public,

with chefs and bartenders using it to  create fancy ice creams and cocktails.

With this new fascination with liquid nitrogen and the fact that's its available to the public,

And that brings us back to the LN2 pool party that we mentioned before.

In an effort to create a smoke effect to impress guests,

a resort in Mexico poured four large cans  of liquid nitrogen into the hotel pool.

it also did something the organizers didn't know about:

And with no oxygen, guests couldn't breathe.

Luckily though, since it was just four cans of liquid nitrogen that were added slowly,

it boiled off in the water before it made contact with anyone's skin.

if the entire pool was filled with pure liquid nitrogen?

Well, one thing's for sure. You wouldn't want to go for a swim in it.

You'd be better off just dipping your hand in quickly.

If you were to quickly submerge your hand  in liquid nitrogen, it would feel frozen but

there wouldn't be any frostbite or damage

because of something called the Leidenfrost effect.

Because liquid nitrogen boils at the very low temperature of -196 °C (−320 °F),

it will bead up and create a layer of vapor underneath it

when it touches any surface  that's at room temperature,

similar to when you drop water onto a flat heated surface.

So if you dipped your hand inside liquid nitrogen,

a vapor barrier would immediately form  that protected your hand from freezing.

But the protective barrier  would only be temporary.

If you were planning on taking a long swim,

Instead, you'd get severe frostbite all over your body.

Then, the cold would work  its way deeper inside you.

Muscles, fat, your blood, and every other  liquid in your body would be frozen solid.

your body would freeze underneath  you, and you'd sink right down.

there probably wouldn't be much pain involved since

the nerve damage would be so  severe and occur so quickly.

As terrible as this would  be for a living creature,

it could actually be  beneficial for a dead one.

some people have chosen to have  their bodies frozen when they die.

And the idea is that you can be frozen  and brought back to life at a later date.