How fast is the speed of light?

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asked Apr 13, 2016 138k views

2 votes

How fast is the speed of light?

Chemistry
middle-school

Markti asked

by Markti

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The speed of light is 299,792,458 meters per second in vacuum.
It's somewhat slower in any material substance, and different in
each substance.

(That's 186,282.4 miles per second.)

ScottJ answered Apr 19, 2016

by ScottJ

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