Physics
Particle in a Box
|ψ|² = 2 sin²(nπx)

The quantum probability density of a particle confined to an infinite well gains one more oscillation, and one more node, with every rise in the quantum number n.
Computed & rendered in pure C# on the frozen OnlyCSharp 1.8 library — animation baked to GIF with the library's own
Gif encoder (no GPU, no ffmpeg, no external packages).