General Relativity and Einstein's Equations
Yvonne Choquet–Bruhat · Oxford University Press eBooks · 2008
This chapter begins with a discussion of Newton's gravity law. It then covers general relativity, observations and experiments, Einstein's equations, field sources, Lagrangians, fluid sources, Newtonian approximation, Minkowskian approximation, high-frequency gravitational waves, and coupled electromagnetic and gravitational waves.