How much faster is the transmission of a signal in a fiber optic cable than in a copper wire? I would assume fiber optic cables transmit signals at the speed of light (this begs the question, are fiber optic cables vacuum sealed or is the light moving through air, but that wouldn't make much of a difference) but how does that compare with the speed of a signal moving through a conductor? I've seen online that signals travel at about the speed of light as well. If that is the case though, why are fiber optic cables preferable?
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quora.com/How-fast-does-electricty-travel And en.wikipedia.org/wiki/Speed_of_electricity I was just as surprised. – Ulthran Aug 17 '16 at 15:21
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1networkengineering.stackexchange.com/questions/16438/… – BowlOfRed Aug 17 '16 at 16:04
