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

Theoretical physicists aren't forced to field the answer to this question at this moment in space time. Einstein later worked out how the force of gravity is not quite a force, but rather an artifact of the natural movement of objects through curved four-dimensional spacetime. Reply Sat 25 Aug, 2012 01:40 pm. Description: Опубликовано Yesterday пользователем Anton Shlyakin. As I understand, the gravitation of general relativity in effect locally contracts spacetime, counteracting and overcoming any universal expansion of spacetime. 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. In order to describe how Alice feels the world around her we can also use the concept of curved spacetime. Anshul wrote: Why is there gravitation? The Bianchi space-times are a generalization of the simplest Friedmann-Lemaitre-Robertson-Walker (FLRW) cosmological models. Like a beach chair sagging under a sunbather's weight, the fabric of spacetime does indeed. In order to describe gravity, general relativity uses the concept of curved spacetime. If gravity is the shape of spacetime, why is there the need for a graviton messenger particle? The amount of matter condensed in such groupings is so high that their gravity is enough to warp even the fabric of space-time, distorting the path that light takes when it travels through the cluster. 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. I say hovering in place because this means the lines they trace out in space-time are (initially) parallel.