This book gives a simplified account of a new fundamental theory of physics. It is based on two postulates (or laws) and from these are derived a set of Field Equations. The solutions of these equations account for many of the features of modern physics. These solutions lead to the prediction of Newton's laws of motion and gravitation, Coulomb's law and electromagnetism, and the prediction of the values of the gravitational constant and the charge on the electron which are close to the measured values. They also lead to a formula for Plank's constant, and to Schr dinger's equation and the basis for quantum mechanics. Particles are not points. Structures are proposed for the proton, neutron, electron, electron neutrino, muon, pion and kaons. The theory provides an account of the up, down, strange, charm and bottom quarks and the W^+/- and Z particles. The book is mathematical, but simplified as much as possible to make the book accessible to a wide range of readers.

A Theory of Fields is a new approach to a unifying fundamental theory of physics. It is based on just two postulates from which gravity and electricity emerge as fundamental concepts, resulting in a set of Field Equations. The book develops solutions of these equations and, in so doing, accounts for the existence of fundamental particles and derives the principles of classical mechanics, quantum mechanics, electromagnetism and gravitation. Travelling wave solutions lead to the existence and properties of photons. Models are proposed for the proton, neutron, kaon, pion, muon, electron and electron neutrino leading to the prediction of their shapes, sizes, inertial masses and internal structures. Predicted values for the gravitational constant and charge of the electron agree with the measured values within less than 20%. Many other topics in modern physics are also dealt with in the context of the new theory, including the nuclear force, the weak force and quarks.