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Sep 26, 2017 at 17:46 comment added Philip Gibbs - inactive As I said, it has been discussed here before. Here are three other answers and two papers with more maths physics.stackexchange.com/questions/2597/… physics.stackexchange.com/questions/41662/… physics.stackexchange.com/questions/259759/… prespacetime.com/index.php/pst/article/view/81 pdfs.semanticscholar.org/36d2/…
Sep 25, 2017 at 23:13 comment added user43796 no math deduction?
May 16, 2017 at 11:04 history edited Jens CC BY-SA 3.0
Dead link removed.
Sep 2, 2012 at 7:56 history answered Philip Gibbs - inactive CC BY-SA 3.0