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Discrete Reaction-Diffusion
This cellular automaton provides a simple model for chemicals that are reacting and diffusing in the plane. Note the appearance of spiral waves.



This demonstrations is based on the Greenberg-Hastings cellular automaton rule.


"Discrete Reaction-Diffusion" from The Wolfram Demonstrations Project
 http://demonstrations.wolfram.com/DiscreteReactionDiffusion/
Contributed by: Stephen Wolfram
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