young double slit
A free physics simulation — play it in your browser, no install. Young's double-slit experiment simulated per-pixel in WebGL2 — with a polarisation path marker (Fresnel–Arago). No build, no dependencies.
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Open the live demo Source on GitHubFrom the README
An interactive simulation of Young's double-slit experiment that runs entirely in the browser. The wave physics is evaluated **per-pixel in a WebGL2 fragment shader**; the interface is plain HTML. No build step, no dependencies, no server — a single self-contained HTML file per page.
Beyond the classic fringes, the demo lets you **control the coherence between the two slits**: polarise them at an angle φ from each other and the two paths stop interfering, so the fringes fade away. That is Fresnel–Arago's third law — and it is the mechanism real which-path experiments are built on.
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