At light speed, Einstein's equations break down and nothing makes sense

submitted by hfxB0oyA from bigthink.com

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[–]zyxzevn 2 insightful - 2 fun2 insightful - 1 fun3 insightful - 2 fun -  (1 child)

The GPS and Mercury orbit is related to Einstein's gravity. A different Einstein theory: General relativity.
Which he derived from Special relativity, which deals with the speed of light and time.

The first gravity theory of Einstein was about a variable speed of light.
You can get the same GPS and Mercury orbit with it.
And according to RonHatch it is even better, but we never see it discussed.

[–]ActuallyNot 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (0 children)

Which he derived from Special relativity, which deals with the speed of light and time.

Not quite true. The derivation was independent from special rel.

The first gravity theory of Einstein was about a variable speed of light.

Really?

Contradicting Maxwell's equations?

When was his work on this theory published?