Physics
Length Contraction
L = L₀ √(1 − v²/c²)
A rod measured while moving contracts along its direction of travel, its length collapsing toward zero as its speed approaches that of light.
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).