 What I'm going to do is, I'm going to pour a little bit of water in the can. And we're going to put it on the hot plate and let it get hot. And this one we're not going to put any water in. And we're going to let it get hot also. If you can see something coming out of the can, we usually say that's water vapor. But if you can actually see it, it's water as a liquid, not water as a gas. And that's because it's coming up as a gas and hitting the cool air and condensing. But they're really tiny droplets and they get enough energy to evaporate again. So you see that the atmosphere pushed water in there. Let's try it with the one in which we have a little bit of water in the bottom and see what happens. Now why did it do this? Why did it crush this one? And in this case, it only pushed water up about this far.