an ideal-gas laboratory
A glass chamber of glowing hard spheres, colliding with true elastic dynamics. From chaos at the microscopic level, the macroscopic laws emerge: the Maxwell–Boltzmann speed distribution, pV = NkT, equipartition of energy, Brownian motion, adiabatic gas springs, Joule expansion, effusion — and a certain demon.
Equilibrium verifies the MB law live. Equipartition mixes light & heavy gases — same energy, different speeds. Brownian floats a pollen grain in the bombardment. Piston releases a weighted piston: heat the gas and it rises (Charles’s law), decouple the bath and compression heats adiabatically. Free expansion opens a partition into vacuum — entropy up, temperature flat. Maxwell’s demon sorts fast right, slow left, building a temperature gradient from nothing (Landauer sends the invoice). Effusion leaks a mixture through a pinhole — light isotopes escape first.
| 1 – 7 | Experiment presets |
| Space | Context action (release piston, open partition, demon on/off, pump…) |
| R | Stir — re-thermalize at bath temperature |
| B | Couple / decouple the thermal bath |
| V | Color mode: speed / energy / species |
| C | Reset camera |
| M | Mute audio |
| S | Save PNG snapshot |
| F | Fullscreen |
| H | This help |