Helium Balloon: Buoyancy, Latex Wall Pressure and Slow Leakage

Interactive 3D helium balloon in a Blender-built room: gas-law buoyancy, neo-Hookean latex wall pressure, helium leakage by diffusion through the rubber with air creeping in, time-to-sink for different balloons and rooms, and four in-page numerical checks.

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