  The conceptual divide between classical physics and quantum mechanics has not
been satisfactorily bridged as yet. The purpose of this paper is to show that
such a bridge exists naturally in the Green-Wolf complex scalar representation
of electromagnetic fields and its extension to massive fields. The quantum
mechanical theory of radiation that follows from the the Green-Wolf
representation is applied to the cosmic microwave background radiation (CMBR)
regarded as a universal medium, and the implications are explored.
