Difference between revisions of "Spacetime"

Revision as of 01:18, April 12, 2015

The Curvature of spacetime is what gives rise to the forces that are perceived as gravity under General Relativity.

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-'''Curvature of spacetime''' (note the singular) of stationary universe is none since [[spacetime]] has to be flat on the [[Noether theorem]] that requires flat (or [[Minkowski]], which means the same thing) spacetime for the [[conservation of energy]] to hold.
+The '''Curvature of spacetime''' is what gives rise to the forces that are perceived as gravity under [[General_theory_of_relativity|General Relativity]].
-The lack of '''curvature of spacetime''' does not require all of 10 [[curvatures of spacetime]] (note the plural) to disappear since they, being non zero, may combine together in flat [[spacetime]] as it may happen in stationary universe where some [[curvatures of spacetime]] together with others may combine in a flat ([[Minkowski]]) [[spacetime]].
 [[Category: Astronomy]]
 [[Category: Cosmology]]
 [[Category: Physics]]