Angular Restructuring of Laser Light by an Interposed Hair: Space‑Phase Conditioning, Transport Tax, and the Emergence of Light–Dark Corridors

When a coherent red laser beam passes a single human hair and the beam path is madevisible using smoke or aerosol, the light passage within the air reorganizes into alternatingbright bands and dark bands that persist longitudinally in free space. Conventionalexplanations attribute this phenomenon solely to wave interference evaluated at adetection plane. However, the observed persistence of light‑free corridors in the air itselfindicates a restructuring of transport during propagation, not merely at measurement. Thispaper reframes the laser–hair experiment using the Space‑Phase (SP3) framework, whereinlight is transported by a structured carrier that assesses a propagation tax on the light. Thehair acts as a boundary that conditions space‑phase, forcing angular reorganization oftransport into discrete low‑tax-cost corridors while excluding others. Huygens–Fresnelconstructions are shown to implicitly encode this carrier conditioning without naming it.The resulting interpretation explains why dark bands represent regions of suppressedtransport rather than canceled energy, and why the beam self‑organizes into stable angularmodes within the air, post-hair, and prior to detection at the screen.