Prediction 1 — Spin–Time Coupling in Strong Gravitational and Rotational Fields

This work presents a testable prediction arising from the Physical Time (rho_t–k) framework in its Dirac relativistic spinor formulation. The theory predicts a measurable excess in spin precession caused by curvature in the Time-density field rho_t, producing a correction of approximately 0.5–2 percent beyond the frame-dragging value expected from General Relativity. This effect becomes strongest in environments with large rho_t gradients, such as neutron stars, magnetars, and rotating black holes. Current observational programs—including NICER neutron-star timing, LARES-2 and LAGEOS satellite laser-ranging, and polarization measurements of M87* by the Event Horizon Telescope—operate in the regime required to test this prediction.