⏳ Sand & Smoke Sandbox: Buoyant Plumes, Combustion and Angle of Repose Lab

Pour sand, light a wood pile, heat lava rock and watch smoke curl upward. A sand, water and fire automaton is coupled to a real stable-fluids gas layer with buoyancy, so you can measure heap angle versus moisture, plume speed versus heat release, burn-out time and a smoke-detector decay.

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install