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re: The New Hubble Telescope
Posted on 7/18/22 at 9:28 pm to Korkstand
Posted on 7/18/22 at 9:28 pm to Korkstand
quote:
wouldn't the universe look different in one direction than the other?
Nope. It's still a relativistic universe and everything in relativity is tied to c, but not a specific value of c. If the speed of light varies with direction, then the other effects of things like time dilation and Lorentz contraction exactly balance out the change in c and the universe would appear the same as it would if c were the same in every direction.
1
Posted on 7/18/22 at 9:39 pm to TigerstuckinMS
quote:I can see it if there is a slight difference, but I'm thinking of the special case of c/2 one way and instantaneous the other. And I guess c in every other direction would be proportional to the cosine maybe?
Nope. It's still a relativistic universe and everything in relativity is tied to c, but not a specific value of c. If the speed of light varies with direction, then the other effects of things like time dilation and Lorentz contraction exactly balance out the change in c and the universe would appear the same as it would if c were the same in every direction.
Anyway, in the exact direction of instantaneous light, I would think there would be either a very bright spot in the case of uniform expansion, or a very dark spot in the case where universal expansion is also directional.
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