Chun‐Hung Lin

Kakeya and the Rain-Field Analogy: From Needle Rotation to Directional Residuals

Abstract We see rain, not needles. A storm presents many short trajectories at once:gravity pulls them, wind inclines them, turbulence disperses them, and terraindecides where their water can go. The classical Kakeya image presents somethingelse: a unit segment in every direction...