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🧪 3D Hourglass Sand

Explore a 3D sand timer: sand flows through a narrow neck from the top bulb to the bottom, creating a natural conical heap. Tap 'Reverse' to restart.

Everyday Physics3DModerate60 FPS🌍 Earth

⚙ Under the hood

This simulation visually represents the flow of time using a simulated hourglass filled with sand. It demonstrates the principles of gravity and fluid dynamics as the sand grains fall through the narrow neck.

Hourglass EffectFluid DynamicsSand Flow

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