# What is the name and value of the constant that relates to electrons and that coincidentally has the same exact value as the speed of light? [closed]

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)!

## closed as not a real question by David Z♦Feb 28 '11 at 0:18

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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
• 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
• hahaha.. well too bad my reputation can't go below 1. ;) – trusktr Feb 27 '11 at 13:09

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."