Part III · The Law · Paper 19 of 40
“g = (c²/3) ∇ ln ρ. No masses. No separation. No gravitational constant. Gravity is how fast the thickness of space changes.”
Gravitational acceleration expressed in the Plenum's own terms, recovering Newton exactly and satisfying Poisson's equation. And the result that settles the hardest classical test: Mercury's 42.98 arcseconds per century, derived from the density gradient alone, with no metric, no field equations and no spacetime curvature.