  Interpretation of the cosmological red shift as light retardation with the
amount of (d/dt)c = -Hc yields a photon rest mass hH/c^2. A system of natural
units is introduced, in which the Planck mass is the geometric average of the
photon rest mass and the universal mass. It is shown that the equivalence of
expansion and light retardation results in a Cosmologic Uncertainty Principle
(CUP), which determines the Heisenberg Principle. Within the Retarded Light
Mode (RLM) the Dirac "coincidences" are found to be systematic, and an
explanation is provided.

General Relativity and Quantum Cosmology