🌈 Rainbow & Optics - 3D Rainbow Simulator with Raindrop Ray Tracing

Walk onto a Blender-built meadow in a summer shower and see primary and secondary rainbows form from Descartes ray paths and Airy-theory brightness, with dispersion, polarisation, drop size, sun elevation and a giant raindrop ray tracer.

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