Skip Navigation
I6-01. Gas Pressure - Model
Search
- Sections
- A. General Materials & Mathematics
- B. Statics
- C. Kinematics & Dynamics
- D. Rotational Mechanics
- E. Gravitation & Astronomy
- F. Fluid Mechanics
- G. Vibrations & Mechanical Waves
- H. Sound
- I. Thermodynamics
- J. Electrostatics & Magnetostatics
- K. Electromagnetic Principles
- L. Geometrical Optics
- M. Wave Optics
- N. Spectra & Color
- O. Vision
- P. Modern Physics
I6-01. Gas Pressure - Model
Purpose
To illustrate the molecular nature of gas pressure.
Equipment
Gas pressure model with variac as photographed.
Images
Description
A vibrator motor is activated causing chaotic motion of a group of ball bearings in a plastic container. The upward motion of the ball bearings pushes a weighted bar upward, indicating the upward force of air pressure on the bar. Increasing the rotational speed of the motor increases the average speed of the balls and pushes the bar up further, modeling a greater pressure.
References
A. H. Benade, Quantitative Kinetic Theory Model, AJP 23, 281-285 (1955).
-
See pagesi1. thermal properties of matter
-
See pagesi2. transfer of heat
-
See pagesi3. gases
-
See pagesi4. changes of state
-
See pagesi5. laws of thermodynamics
-
-
-
See pagesi1. thermal properties of matter
-
See pagesi2. transfer of heat
-
See pagesi3. gases
-
See pagesi4. changes of state
-
See pagesi5. laws of thermodynamics
-
-
Physics Lab Demos