pmb_phy
Mar16-04, 11:52 AM
Very interesting Einstein quote regarding the relationship between gravity and geometry in general relativity. From a letter to Lincoln Barnett in 1941
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.
Exactly! Way to Big Al! [:D]
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.
Exactly! Way to Big Al! [:D]