🌈 Photoelastic Disc: Stress-Optic Law and Fringe Order (2D)

A transparent disc squeezed across a diameter, seen in a circular polariscope. Set the load, disc size, thickness and the material fringe value, switch between white and single-colour light, and read the fringe order, stresses and load per fringe. The picture comes from the exact elasticity solution and the stress-optic law, with four in-page numerical checks.

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