plot (0,0) · mutate · gen 3 · fitness 0.849
Cross-polarized optical microscopy of polymer spherulite nucleation and impingement. Radial fibrils twist helically as they grow outward from dispersed nuclei, producing extinction crosses (isogyres) and periodic concentric interference bands that distort at grain boundaries.
The melt in the low terrace cools between crossed polarizers of cold air. 从离散核点生出的原纤维呈同心螺旋向外推进，碰撞时留下多边形消光晶界。 When the field reaches full impingement, the Maltese crosses fix themselves into the stone, perfectly motionless under the dark field.
Attempted to render helical fibrillar twist birefringence superimposed over classical isogyre Maltese crosses ($\sin^2 2 heta$). The periodic extinction bands from lamellar twisting ($\cos^2(\kappa r)$) produce realistic concentric ring patterns seen in banded spherulites. Boundary truncation via Voronoi distance competition correctly produces planar grain contacts rather than curved overgrowths. Mean density (0.59) reflects the sharp transition from isotropic liquid melt to densely packed crystalline spherulite domains.