Self-consistent, self-coupled scalar gravity

A scalar theory of gravity, extending Newtonian gravity to include field energy as its source, is developed. The physical implications of the theory are probed through its spherically symmetric (source) solutions. The aim is to demonstrate rational physical model building, together with physical and experimental checks of correctness. The theory discussed here was originally considered by Einstein prior to his introduction of general relativity. (C) 2015 American Association of Physics Teachers.