Paper V: The Substrate Field: Unifying Power in Physics – A Synthesis of the Five-Part Series

This paper concludes the five-part series on the substrate field theory. It synthesizes the core results from the previous four papers and the mathematical formulation of Paper VI, demonstrating the framework's unifying power across physics. Starting from the single postulate that any finite speed requires a physical medium, the theory derives the existence of a universal substrate field with rigidity K and effective density rho0 that determine the speed of light c = sqrt (K/rho0). Using only optical refraction data, we obtained rho0 ≈ 4. 4e3 kg/m³ and K ≈ 4. 0e20 Pa. From this foundation, the substrate theory provides a unified explanation for: cosmological redshift as dissipation (not expansion) and the Hubble relation; Olbers' paradox; angular momentum losses in celestial bodies via a universal dissipation coefficient alpha ~ 1e-20; the absence of dark matter and dark energy; the origin of the CMB dipole (its direction points to the cosmic center, while the observed speed is relative to the CMB) ; the cyclic universe with a central mass; the emergence of quantum mechanics from the substrate's microscopic granularity and intrinsic dissipation; the thermodynamic arrow of time; and the unification of gravity with other interactions via substrate density gradients. The theory makes testable predictions and eliminates ad hoc entities such as dark matter, dark energy, inflation, and quantum postulates. It offers a coherent, self-consistent description of physics from the smallest scales to the largest. Part V of the Substrate Field Theory series