A composition field obeys the Cahn–Hilliard equation ∂c/∂t = ∇²(c³ − c − γ∇²c), with gold-rich vs silver-rich colouring.
Tap to remix a spot. The same ?seed= always gives the same run.
LITCahn & Hilliard (1958). Mean composition must stay fixed to 10−6 and the field must stay finite, or the page throws.
AMBERReal Au–Ag is fully miscible; the colours only nod to electrum.