What to try
- Compare Labyrinth, Islands and Ribbons; each opens after 1,800 real simulation steps.
- Reset chemicals to inspect the initial deposits, then step forward or add B at the probe.
What to look for: The pattern emerges from repeated diffusion, reaction and removal. The inspector accounts for one cell’s next update. B is displayed on a 0–0.45 brightness scale so the actual concentration structure remains visible.
How it works
The Lab evolves concentrations A and B. Diffusion spreads each field through a neighborhood; the reaction term A × B² consumes A and produces B. Feed replenishes A and kill removes B. Their balance matters more than either number in isolation.
The initial seed patches, diffusion rates and iteration count also affect the image. A fixed simulation grid controls the numerical workload; the resulting field is resampled to the document. More steps means more simulated evolution, not simply more noise octaves.
Use it in the Lab
Use Reaction–diffusion as a generative starting layer and then shape the contrast or palette. Save the full settings and seed when you discover a useful regime.
Limits & distinctions
This is a bounded numerical illustration with a fixed update scheme. It is not calibrated to a physical chemical system, and extreme parameter choices can produce saturated or featureless fields.
Sources & references
Guide updated