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How fas does light travel?

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13y ago

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Light in its fastest state in a vacuum only can travel at 3.0*10^8km/s but as it enters the earth's atmosphere, the atmosphere is full of dust particles and layers of gases which can effect the speed of light slightly, in the earths atmosphere light travels at 2.89*10^8 km/s .

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13y ago
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Q: How fas does light travel?
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