The U-Skate World

Gray-Scott reaction-diffusion, running on a square grid with toroidal wrap-around. Parameters: k = , F = . This region of Gray-Scott has been called the U-Skate World by Robert Munafo, who discovered its amazing behavior in 2009. (more...) Computed by forward Euler integration, with diffusion values of (D_a) and (D_b) and a timestep of 0.2. The grid is 512x512. The full equation is: delta_a = D_a * laplacian_a - a*b*b F*(1-a) delta_b =