Based on first principles solutions in a unified framework of quantum mechanics and electromagnetism we predict the presence of a universal attractive depolarisation radiation (DR) Lorentz force (F) between quantum entities, each being either an IED matter particle or light quantum, in a polarisable dielectric vacuum. Given two quantum entities i = 1,2 of either kind, of characteristic frequencies nu(0)(i), masses m(i)(0) = h nu(0)(i)/c(2) and separated at a distance r(0), the solution for F is F = -Gm(1)(0)m(2)(0)/(r(0))(2), where G = chi(2)(0)e(4)/12 pi(2)epsilon(2)(0)rho(lambda); chi(0) is the susceptibility and rho(lambda) is the reduced linear mass density of the vacuum. This force F resembles in all respects Newton's gravity and is accurate at the weak F limit; hence G equals the gravitational constant G. The DR wave fields and hence the gravity are each propagated in the dielectric vacuum at the speed of light c; these can not be shielded by matter. A test particle mu of mass m(0) therefore interacts gravitationally with all of the building particles of a given large mass M at r(0) apart, by a total gravitational force F = -GMm(0)/(r(0))(2) and potential V = -partial derivative F/partial derivative r(0). For a finite V and hence a total Hamiltonian H = m(0)c(2) + V, solution for the eigenvalue equation of mu presents a red-shift in the eigen frequency nu = nu(0)/(1 - GM/r(0)c(2)) and hence in other wave variables. The quantum solutions combined with the wave nature of the gravity further lead to dilated gravito optical distance r = r(0)/(1 - GM/r(0)c(2)) and time t = t(0) /(1 - GM/r(0)c(2)), and modified Newton's gravity and Einstein's mass energy relation. Applications of these give predictions of the general relativistic effects manifested in the four classical test experiments of Einstein's general relativity (GR), in direct agreement with the experiments and the predictions given based on GR.
