Photon Helical Geometry from Angular Momentum Constraint

Derives photon helical geometry from angular momentum constraints. Starting from L=ℏ and E=ℏω, we prove photons are rotating helices with radius r=λ/(2π) and pitch p=λ. This geometry explains wave-particle duality as viewing perspective: helices appear as waves transversely, particles axially. Predicts testable impact diameter d=λ/π across all wavelengths, measurable with existing NSOM technology. Self-propulsion emerges from R/c information lag creating perpetual center-of-mass chase. No free parameters—geometry fully constrained by quantum observations.