And what this theory did for us is it helped us gain more intuition about how individual gas molecules interact on a very small microscopic level. Now we also spoke about a law called Boils Law. And what Boils Law did for us is it helps help us gain more intuition about the macroscopic behavior of gases. In other words, what happens at constant temperature when we take a balloon filled with air and squeeze it. Well, we said that, and Boyle's Law explained this, that when we squeeze the balloon, we decrease volume, increase pressure, and eventually our balloon will pop. Now we're going to look at another law called Charles Law which also helps us explain the macroscopic large scale behavior of many gas molecules and how they interact with one another and with our system.