: He treats gravity like other fundamental forces, using tools from quantum electrodynamics (QED) and particle physics.
Feynman’s "bottom-up" method contrasts with the "top-down" geometric approach found in most textbooks: Feynman Lectures on Gravitation
: The theory is built on the demand that the gravitational field must couple to its own energy, an iterative process that recovers the full complexity of general relativity. Key Lecture Topics : He treats gravity like other fundamental forces,
: Explorations of "superstars" (early precursors to quasars), wormholes, black holes, and the large-scale structure of the universe (cosmology). : The principle of equivalence, the necessity of
: The principle of equivalence, the necessity of a tensor field, and the iterative derivation of field equations.
: Detailed discussions on planetary motion (including the perihelion shift of Mercury), gravitational waves, and the behavior of light in gravitational fields.