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There's some constant relating to electrons that also has the same value as the speed of light. What is it, what is the value, and how are they related?

EDIT: Is it the fine-structure constant?? Are there any other similar constants? If you posted that answer before, you shoulda left it (to the person who deleted their answer)!

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What is the value of a constant that has exact the same value as the speed of light? Well, isn't that obvious? ;) The question is rather vague. – Heidar Feb 27 '11 at 12:33
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Wait, I just have to find my mind-reading device then I'll tell you... – Marek Feb 27 '11 at 12:36
lol.. but isn't there ONLY one such constant? I just can't recal what it's called... but it's very interesting! – trusktr Feb 27 '11 at 12:48
-1 ... aaaarghh – user346 Feb 27 '11 at 13:05
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hahaha.. well too bad my reputation can't go below 1. ;) – trusktr Feb 27 '11 at 13:09
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closed as not a real question by David Zaslavsky♦ Feb 28 '11 at 0:18

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, see the FAQ.

1 Answer

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The constant you are looking for is not related to electrons, but to electromagnetics. From the Wikipedia article 'Speed of light':

"The classical behaviour of the electromagnetic field is described by Maxwell's equations, which predict that the speed c with which electromagnetic waves (such as light) propagate through the vacuum is related to the electric constant ε0 and the magnetic constant μ0 by the equation c = 1/√ε0μ0."

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