🔦 Arago-Poisson Spot and Fresnel Zone Plate Diffraction Bench (2D)

Shine a laser past a ball bearing and find the bright Arago-Poisson spot in the middle of the shadow, open a circular hole to watch the centre flicker, or focus light with Fresnel zone plates. Numerical Fresnel diffraction with live profiles.

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install