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General relativity — gravity is the curvature of spacetime
relativity
Mass-energy curves spacetime (the Einstein field equations) and bodies follow geodesics - the equivalence principle. Its tests (light deflection 1.75 arcsec, the gravitational redshift) are sealed on the gravity stick. GR is a Lagrangian field theory - the Einstein-Hilbert action.
source
Narrow Highway — relativity
card id
card_rel_general
address
WIT.codex.FCT/general-relativity-gravity-is-the-curvature-of-s/REF.WITNESSED@narrow-highway
adjoining cards
- part of → Relativity — many frames, one invariant — a pillar of relativity (General relativity)
- connects at → The Lagrangian — the Hamiltonian's dual, the path chosen — general relativity is a Lagrangian field theory: the Einstein-Hilbert action
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