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The "official" speed of light in a vacuum is 299,792,458 metres per second
So in a millisecond - which is one-thousandth of a second - it will travel 299,792.458 metres.
The Imperial equivalent of that is 186.2824 miles, or 186 miles, 495 yards, 5 inches.
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∙ 15y ago
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The speed of light indicates how fast light can travel in a vacuum?
Yes ... in a vacuum.
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the speed of light
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