Thermodynamics > Kinetic Theory DCS# 4D30.20

PROJECTION GAS MODEL


2D gas model on overhead projector

APPARATUS

plexiglass box of glass ball bearings with motor and offset rod 202-11-D1
DC power supply 202-08-D
two C-clamps 202-01-E5
overhead projector 201

DESCRIPTION

The motor shakes the plexiglass box of balls to simulate random motion of atoms in a gas.  Increasing the motor speed is analogous to increasing the temperature of the gas.

The box currently contains balls of two different sizes, to show that those with the smaller mass have a greater average velocity at a given temperature.

small balls in motion  big and small balls in motion

NOTES

Secure the feet of the ring stand to the overhead projector cart with C-clamps. 

Make sure the frame is level.