Abstract

Isaac Newton's Law of Universal Gravitation has no mechanism although Newton did propose that gravity could be caused by a particle called the fluxion. Einstein proposed that gravity was caused by the bending of space-time but also gives no mechanism. This paper proposes that there is a particle or a quantum called the graviton that is not an infinitely divisible field as proposed by the equations of Newton and Einstein, but a finite force which has effects that have a defined limit. Four postulates are proposed that lead to a step by step development of the graviton equation. The curves for gravitational acceleration are compared using measured data, Newton?s equations, and the graviton equation.