🌀 3D Sine Wave as a Phasor Helix: Projection onto Walls and Fourier Synthesis

A Blender-modelled optics bench shows the sine wave as the shadow of a phasor helix: the 3D curve of a rotating phasor chain with its sine and cosine projections onto a wall and a floor, Fourier synthesis of square, sawtooth and triangle waves, and live checks.

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