# Title Image Description Video
1 Brownian Motion Cell

Brownian Motion

Observe the motion of particles in a smoke cell through a microscope.

 

Video
2 Crookes' Radiometer

Mean Free Path

This radiometer spins in the opposite direction from what theory predicts; the white side moves forward.

Turn on the light and watch it spin.

Video 1

Video 2

3 Molecular Motion Demonstrator

Kinetic Motion

The kinetic theory of gas is expanded using a variable speed molecular motion demonstrator on the overhead.