Gold and silver atoms sit on a lattice in exactly a 79/21 ratio. A random atom tries to swap with a random neighbour. Every unlike bond costs J, so a swap is accepted with probability min(1, e−ΔE/T).
Drag the anneal temperature. Tap to stir a patch. The same ?seed= always gives the same run.
LITKawasaki exchange dynamics, which conserve composition. The silver count and the tracked unlike-bond count are checked every 30 steps, or the page throws.
AMBERReal Au–Ag mixes almost ideally; the J here is chosen to show separation. The 79/21 electrum ring is Dave’s TARDIS shell.