Quote:
Originally Posted by tommac
Sorry article is a little over my head. I may have asked the question wrong.
What I want to ask is when energy = 0 on one side of GR equation you have a flat manifold. Right? What does that mean?
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You have a
Minkowski spacetime which has a Minkowski metric. Which has three space and one time dimension. Euclidean Space (which was what space was though to be prior to relativity) has three space dimentions. Think of it this way, in flat space, the interior angles of a triangle add up to 180 degrees. In curved space, they can be more or less, depending on the curvature.
Quote:
Originally Posted by tommac
Uggg ... I realize all that I do not know right now because I dont know the terms of the question I want to ask. Can you please show the equation again when energy is equal to 0 and all zero'd stuff removed?
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Which equation? There are many interrelated equations. I think you're talking about the Einstein Field Equations, (which is where the curvature and stress-energy tensors are) here it is G
ab=0 or equivalently, R
ab=0. Where G is the Einstein tensor and R is the Ricci tensor. The explanations and derivations can be found
here