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Very interesting Einstein quote regarding the relationship between gravity and geometry in general relativity. From a letter to Lincoln Barnett in 1941

Exactly! Way to Big Al! I do not agree with the idea that the general theory of relativity is geometerizing physics or the gravitational field. The concepts of physics have always been geometrical concepts and I cannot see why the g_ik field should be called more geometrical than f.i. the electro-magnetic field or the distance of bodies in Newtonian Mechanics. The notion probably comes from the fact that the mathematical origin of the g_ik field in the Gauss-Riemann theory of the metrical continum which we are wont to look at as part of geometry. I am convinced, however, that the distinction between geometrical and other kinds of fields is not logically founded.

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# Einstein on Gravity is geometry in GR

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