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Gravitation and spacetime Hans C. Ohanian
Publisher: WW Norton & Co

Flat space-time and negative space-time describe an environment in which the Universe is non-compact, with space extending infinitely, forever in time, in any direction. We write the line element describing the interior space-time of a spherically symmetric star collapsing under the influence of self-gravity (in standard coordinates , , , and ) as where, , , and are yet to be determined. The Theory of Space Time and Gravitation book download Download The Theory of Space Time and Gravitation Kemmer (translator)] on Amazon.com. Space, Time and Gravitation: An Outline of the General Relativity Theory (Cambridge Science Classics)Arthur S. The only concept you need is the simplest one: When only gravity acts upon an object, the object always move in straight line in spacetime. General relativity describes gravity as a curvature of space-time. The observations are a powerful test of Einstein's theory of general relativity, which says gravity can bend space-time, the fabric that shapes our universe, and the light that travels through it. We all aceppt that gravitation can change light way below efect explain how stars give light to objects around star http://3.bp.blogspot.com/-agRtwFCVn. OK so I've had a crazy idea about the universe for a while now and I think I'm just going to go ahead and post it online for all to see and comment. It has been suggested that energetic photons propagating in vacuo should experience a non-trivial refractive index due to the foamy structure of space-time induced by quantum-gravitational fluctuations. In other words, objects in the fabric of space-time bend it so as to create gravity. Space-time and gravitation… OK so I've had a crazy idea about the universe for a while now and I think I'm just going to go ahead and post it online for all to see and comment on.