Abstract: The internal structure of the photon can be described via the EM self-field model (EMSFT) [Fleming and Colorio 2004] (www.biophotonicsresearchinstitute.com) whereby the ordinary photon consists of two sub-particles of equal mass and opposite charge in dynamic equilibrium with each other. The sub-photonic particles are termed the phectron and the phroton, corresponding to the electron and proton of the hydrogen atom. As in the application of EMSFT to the hydrogen atom, the mathematical description of the photon has degrees of freedom associated with the electric (E-) and magnetic (H-) fields, the electric permittivity, ε, and the magnetic permeability, μ, of a region. Since there are two fields per sub-particle (E- and H-fields), there are six degrees of freedom altogether. EMSFT provides eigensolutions for the simple photon and its compounds. Analogous to the spectroscopy of the hydrogen atom, the simple photon can exist in a range of energy states that depend on the motions of the phectron and phroton. Analogous to atomic chemistry, the photon exists as compounds wherein the various sub-photonic structures assume distinct entities. These compounds correspond to the bosons and gluons that mediate the EM, weak and strong nuclear forces known to physics. In regions where gluons exist, the equations controlling the fields are a modified version of Maxwell’s two curl and two divergence equations. For the strong force there are three curl and three divergence equations, there being a new type of field herein termed the nuclear field that depends upon compounded triplets of the phectron and phroton. There is evidence for a photonic chemistry found in nature, including the layered spherical structure of the ionosphere, the various snowflake structures, and hydration structures found in and around DNA and other important biological proteins. It appears that a photonic chemistry may be similarly involved in energy/temperature dependent processes such as the cell cycle.