| DCS # | DEMONSTRATION | REFERENCE | ABSTRACT |
|---|
| 4D20.00 | Mean Free Path | | |
| 4D20.10 | Crookes' radiometer | PIRA 200 | The fake radiometer is evacuated until the mean free path is about the dimension of the system. |
| 4D20.10 | Crookes' radiometer | 4D20.10 | The radiometer spins in the wrong direction. |
| 4D20.10 | radiometer | Hh-6 | The fake radiometer is evacuated so the mean free path is about the dimension of the system. |
| 4D20.10 | radiometer | Disc 14-23 | The radiometer and a lamp. |
| 4D20.11 | radiometer analysis | AJP 45(5),447 | An "elementary" model for the radiometer at the sophomore level. |
| 4D20.11 | Crookes' radiometer | H-164 | When the pressure of the Crookes' radiometer is about 1 mm it works well. Place it near dry ice and it will run backwards. |
| 4D20.12 | Crookes' radiometer backwards | AJP 53(11),1105 | Put your radiometer in the refrigerator, also try an interesting liquid N2 demo. |
| 4D20.12 | Crookes' radiometer backwards | AJP 54(9),776 | Use liquid N2 or freon to cool the radiometer so it will run backwards. |
| 4D20.12 | Crookes' radiometer backwards | AJP 54(6),490 | A letter calling attention to the Woodruff (TPT,6,358) article. |
| 4D20.13 | heating the radiometer | AJP 51(7),584 | Heat the glass of the radiometer until it is motionless and as it cools it will run backwards. |
| 4D20.15 | calorotor | AJP 35(12),1120 | Vanes rotate in a tube filled with 20 mTorr helium warmed on one end. |
| 4D20.20 | mean free path and pressure | PIRA 1000 | |
| 4D20.20 | mean free path and pressure | Hh-7 | Aluminum evaporated in high vacuum forms a shadow of a Maltese cross on the side of the bell jar. |
| 4D20.20 | Maltese Cross | 27-8.7 | Evaporating aluminum atoms plate a bell jar except in the shadow of a Maltese Cross. |
| 4D20.30 | mean free path pin board | PIRA 1000 | |
| 4D20.30 | mean free path pinboard | 27-8.6 | Steel balls are rolled down a pinboard and the number of collisions is compared with theory. |
| 4D20.31 | velocity distribution and path lengt | 10-3.1 | Take pictures of air table pucks and plot velocity distribution and path length. |
| 4D20.40 | Boltzmann distribution model | AJP 34(12),1143 | A set of cusps is formed in a curve with height representing energy levels. The assembly is driven by a shaker. |
| 4D20.45 | computer Maxwell-Boltzmann | AJP 52(1),54 | A FORTRAN program available from the author that shows the evolution of speed distributions. |
| 4D20.46 | computer many particle systems | AJP 58(11),1073 | Computer simulations with a billiard table model and a particle moving in a regular array of hard discs. |