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Originally Posted by Tensor
You can't put semantics aside. The idea of a prefered frame of reference, as used in relativity, means a frame where the laws of physics are demonstratably different from other frames.
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Then don't put semantics aside, and this...
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Originally Posted by RussT
Evidently, there is a prefered frame as currently defined.
That would be lights own 'Preferred' reference frame, where light is simultaneous at all points along its path to infinty, or from source to sink, and where photons experience NO Time as they travel in this 'preferred' frame.
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is pure 'proof' that lights own frame needs to be the same in its own frame as it is in all the other frames, where light travels at 186,000mps in vacua!
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Originally Posted by Tensor
So, there are no preferred frames in relativity, as the idea of physics being the same in every frame is a postulate of Relativity.
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And you just said so yourself!
Light getting here 'instantaneously', in its own frame, whether it is coming from a Quasar 13 Billion Ly's away or Alpha Centauri......IS Impossible!!!