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Scientists have defined the speed of light in a vacuum to be exactly 299,792,458 meters per second, which is 983,559,096 feet per second. So a ray of light in a vacuum could travel a foot in 983,559,096 millionths of a second, which is pretty fast.

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15y ago
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7mo ago

Light travels about 983,571,056 feet per second, so it would take about 1.08 nanoseconds for light to travel one foot.

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Q: How long does it take for light to travel a foot?
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The speed of light in a vacuum is 3108 meters per second How long does it take light to reach a distance of 455m?

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How long does it take light to travel 100 meters?

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It would take (10 divided by 30,000,000,000) seconds to travel 10 cms, which is 0.000000000333333 of a second (approximately!) In nanoseconds this is 1/3rd of a nanosecond. For all practical purposes, for such a small distance, one could consider that the beam of light (in space) would travel that distance almost in an instant. It's that fast!


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