Sand — ∂h/∂t = ν∇²h - λ(∇h)² + ηTap to zoom

Sand

∂h/∂t = ν∇²h - λ(∇h)² + η

The KPZ equation at steady state — a surface shaped by deposition and smoothing. The final form the landscape was always becoming.

The shape the surface was always becoming

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