This java applet shows a microscopic model for an ideal gas. The pressure that a gas exerts on the walls of its container is a consequence of the collisions of the gas molecules with the walls. In this model:

1. The molecules obey Newton's law of motion.
2. The molecules move in all direction with equal propability.
3. There is no interactions between molecules (no collisions between molecules).
4. The molecules undergo elastic collisions with the walls.

1. N: Total number of molecules
2. P: The presure of the system
3. v: The velocity of each molecules.
4. The width of the container (Click near the boundary and Drag the mouse)

The animation is suspended when you press the mouse button. It is resumed when you release the button.