web blackhole
A free physics simulation — play it in your browser, no install. Real-time spinning (Kerr) black hole ray traced from scratch in WebGPU: lensed accretion disk with Doppler and gravitational shifts, photon ring, lensed starfield. Live demo: https://theanandprasad.github.io/web-blackhole/
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Controls: Drag: orbit the black hole · Mouse wheel / pinch to zoom
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Open the live demo Source on GitHubFrom the README
A real-time spinning (Kerr) black hole, ray traced from scratch on WebGPU with no engine or rendering library. Every pixel follows a light ray backwards through curved spacetime. It draws the shadow, the lensed accretion disk with its Doppler and gravitational shifts, the photon ring and a lensed starfield. You can orbit it, fly around it, and change its spin while it runs.
**Live demo: (needs a browser with WebGPU)
Open the live demo, or open blackhole.html in a browser with WebGPU (recent Chrome, Edge or Safari). blackhole.min.html is the same page minified.
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