This publication includes all the physical constants (with an accuracy of up to 15 significant figures), together with their formulas, required for the mathematical prediction atomic and astronomic models. It also includes detailed mathematical descriptions of heat, gravity, mass, electricity, etc. Using Newton's and Coulomb's laws, it has been possible to the predict the neutronic radius and thereby rationalise all the physical constants and their formulas. There are, in fact, only seven primary physical constants, all the others can be calculated accurately using them. All constants (including electrical) are provided in terms of the same five units; metres, seconds, kilograms, Coulombs, Kelvin