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Is the speed of light in a vacuum is infinity speed?
And if it is, then does this mean that time has slowed to stop?
- John (age 9)
The speed of light in vacuum is not infinite, it's c = 3x108
meters per second. That's fast but not infinite. As an example, light will travel 30 centimeters (about 1 foot) in one billionth of a second. Light going through a transparent medium like glass or water is slower. V = c/n where V is the speed in the medium and n is the index of refraction of the material.
(published on 02/22/2008)
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