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Astronomy · L4 · From the equivalence principle to observational tests of GR

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The logical chain from Einstein's equivalence principle to spacetime curvature and its major observational confirmations.

by @openstemUpdated Astronomy
Equivalence principle:gravity ≡ acceleration, locallyGravity reinterpreted asspacetime curvaturePrediction: extra perihelionprecession for close orbitsPrediction: light bendsnear massive objectsPrediction: clocks run slowerin stronger gravityConfirmed: Mercury'sperihelion precessionConfirmed: 1919 eclipsestarlight deflectionExtended to galaxy scale:gravitational lensingConfirmed: Pound-Rebka,GPS satellite corrections

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