Solar eclipse & Einstein's theory of relativity

In late 1915, Einstein finalized his general theory of relativity using Riemannian geometry, predicting Mercury's perihelion precession and gravitational lensing. Arthur Eddington verified these predictions four years later during the 1919 solar eclipse.

https://en.wikipedia.org/wiki/Eddington_experiment#External_links

Books by Eddington at PG: https://www.gutenberg.org/ebooks/author/34163

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