Response-Diffusion is sort of an advanced course of; if you wish to learn the mathematical logic, you possibly can go to the RD grasp Karl Sims’ web site:
Let’s begin with a easy analogy:
Response-diffusion programs are a option to describe how issues change and transfer round, particularly while you’re speaking about chemical substances. Think about you may have a few completely different paints on a bit of paper, they usually begin to combine and create new colours — that’s just like the “response” half. The paint blots don’t simply keep in a single spot; they unfold out and mix — that spreading is just like the “diffusion” half.
So, these programs are only a algorithm that inform us how these processes occur: how the chemical substances react with one another to make new stuff and the way they transfer round or unfold out.
This could describe loads of various things in nature, equivalent to how patterns type on animal skins, how air pollution spreads within the surroundings, and many different conditions the place stuff is reacting and shifting on the similar time!