Gray-Scott model: Two chemicals (U, V) diffuse and react. Click to add V. Watch patterns emerge.
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Frame: 0 | Click canvas to add chemical V
What's happening: Chemical U (background) feeds into the system.
Chemical V (the patterns) consumes U and reproduces. The balance between feed rate,
kill rate, and diffusion speeds determines what patterns emerge.
This is real biology: Animal coat patterns (zebra stripes, leopard spots)
form through reaction-diffusion. Alan Turing discovered this in 1952.