Correction of the Electromagnetic Wave Speed Formula

Standard physics treats the speed of electromagnetic waves in vacuum as a universal constant c, defined as c = 1/√(ε₀μ₀). Within the framework of World Quantum Theory (WQT), this paper starts from the ontological definitions of voltage and current in the companion papers [3][4], combined with the permittivity and permeability derived in [5], and obtains: 1 / √(ε_x · μ_x) = 2d where d is the radial velocity component of the particle's macro-rotation. This result is not a constant — it depends on the particle's motion state. The standard formula c = 1/√(ε₀μ₀) holds only when d = c/2. This value d = c/2 is not the actual radial velocity of the terrestrial electron, but an equivalent value locked in by the standard calibration procedure. Standard physics treats this motion-state-dependent reading as a universal constant. We do not claim that 1/√(ε_xμ_x) is the speed of electromagnetic waves. We only show that it is not a universal constant, and that the standard formula is a special case. Keywords: electromagnetic wave speed, World Quantum Theory, permittivity, permeability, form energy, run energy, motion-state dependence