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Barbara Delgado
Physics
12 January, 13:40
What is the speed of light in a vacuume?
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Jaylin Krause
12 January, 14:07
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The speed of light in vacuum is exactly
299,792,458 meters per second.
That's so exact that it's the official scientific definition of a "meter".
The number doesn't t change even if the flashlight or other light source is moving.
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