Timeline for Is there a unit for expression of degree how much space is curved?
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| Aug 19, 2016 at 15:08 | history | edited | user3264392 | CC BY-SA 3.0 |
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| Aug 19, 2016 at 15:02 | history | edited | user3264392 | CC BY-SA 3.0 |
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| Aug 19, 2016 at 14:51 | history | edited | user3264392 | CC BY-SA 3.0 |
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| Aug 19, 2016 at 14:49 | comment | added | user3264392 | I apologise, I competely didn't realise that I had the universal expansion factor $R(t)$ in the same notation as the Ricci scalar $R$. I was trying to start from $k$ as an easy way of seeing positive and negative curvature, going to $K$ which is slightly more involved, finally to the Ricci scalar R which I believe to be the closest thing to a numerical value that determines the nature of the local spacetime. I was basing my answer off chapters in "Relativity, Gravitation and Cosmology" by Robert J. A. Lambourne. | |
| Aug 16, 2016 at 16:47 | comment | added | user4552 | This doesn't answer the question, and in any case is nonsense. The R in your equation is not the Ricci scalar, it's a unitless cosmological scale factor. The easiest way to see that your R can't be the Ricci scalar is that this metric has flat spacetime as a special case. In flat spacetime, the Ricci scalar vanishes, but this metric does not produce a flat-spacetime metric when we set R=0. | |
| Aug 16, 2016 at 12:23 | history | answered | user3264392 | CC BY-SA 3.0 |