Reaction-diffusion systems, first described by Alan Turing in 1952. Two chemicals interact and diffuse at different rates, creating patterns that emerge spontaneously — spots, stripes, labyrinths.
This is how zebras get stripes, leopards get spots, and coral forms its patterns. The math of biology, made visible.
Click or drag to add chemical. Use presets to explore different pattern types. Each preset adjusts the feed and kill rates.