Entropy and irreversibility
Thermodynamics · Engineering
Gas piston lab
Interactive 3DHeat the gas and watch molecules speed up — pressure obeys the gas laws live.
Controls
Drag the sliders or type a value — the simulation updates live.
K
200K600K
×
0.5×2×
Study notes
Coffee cools: entropy up (irreversible). Reversible ideal only. 2nd: waste heat always. Time arrow.