Alluvial dampers.

They're both fluids, they both take the shape of their containers, but a gas is compressible, while a liquid is incompressible.

This stuff is everywhere.

In general, if I have an ideal gas in a container, the pressure exerted on the gas on the side of the container, or actually even at any point within the gas, because it will all become homogeneous at some point and we'll talk about entropy in future videos but the pressure in the container and on its surface, times the volume of the container, is equal to some constant.

They're full of nitrogen.

Once we have sufficiently large number of particles, we can consider them as a fluid.

Let me explain the time for reducing pressure after a dive.

Gas lines?

( coughing ) Gus?

Gus.

On the roof. Gus?!

( clattering ) Gus!

Rotten! ( grunts ) Gus.

Gas?

Noble gases

Noble gases

Noble Gas

Did you stop for gas?

The gas!

Did you just run out of gas?

Gus came by?

Let's keep that in mind, and everything you're going to see in high school and on the AP test is going to deal with ideal gases.

On repeated dives... you must know how much time you need to depressurize.

gaseous nebula

Gaseous nebulae

Gaseous Nebulae

Gaseous Nebula

Oh, Gus.

Have you seen Gus? Gus who?

( somber theme playing ) Hey, Gus.

Gas!

They're using gas!

We're out of gas.

Dioxis.

We're out of petrol.

A gas leak?

What is that? Is that a tear gas?

As you would recall, the stars in elliptical galaxies move randomly.

in my treasure chest, under the castle, with my pet dragon, Gus.

EM

I'm out of gas.

You want the money, so you done something to him. ( unsettling theme playing ) ( dramatic theme playing )

They're using gas!

I don't know, Gus.

Look, the gas.