How much impact would it make in science if the speed of light is discovered to be variable?

Asked Nov 09 '14 at 08:52

Active Nov 09 '14 at 10:55

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So if such a thing happens, how would it alter current physics?

edited Nov 09 '14 at 10:55

Qianyi Guo

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asked Nov 09 '14 at 08:52

Sreenath Skr

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Well, not that much if you think about it – Nov 09 '14 at 08:59
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This is too broad a question. Have a read throught the Wikipedia article on VSL theories and google variable speed of light cosmology then come back to us if you have a specific question. – John Rennie Nov 09 '14 at 10:09
Related: http://physics.stackexchange.com/q/34874/2451 and links therein. – Qmechanic Nov 09 '14 at 12:53

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There are a few results of variable speed of light:

Ellis claimed that any varying c theory

must redefine distance measurements
must provide an alternative expression for the metric tensor in general relativity
might contradict Lorentz invariance
must modify Maxwell's equations
must be done consistently with respect to all other physical theories

answered Nov 09 '14 at 10:11

Qianyi Guo

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