Physical Geometry: Electromagnetism II — Geometric Closure of the Electromagnetic Constants

This paper develops the geometric structure underlying the electromagnetic coupling constants within the transport geometry framework. Building on the charge–flux invariant established in Physical Geometry: Electromagnetism I, the electromagnetic coupling is shown to reduce to geometric transport invariants associated with holonomy. Relationships among the fine-structure constant, vacuum impedance, electric charge, magnetic flux, and Planck’s constant are examined from a geometric perspective. These relations demonstrate that the electromagnetic sector closes on geometric invariants associated with transport structure, with conventional constants appearing as conversion factors between geometric and physical units. The analysis clarifies the geometric origin of electromagnetic coupling and the role of Planck’s constant as a scale relating geometric holonomy to physical action. This Zenodo record establishes priority and archival timestamp. Public release via arXiv is in progress.