Explain why the statement "The speed of light is 300 million m/s" is not always correct.

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Chemistry

27 June, 10:08

Explain why the statement "The speed of light is 300 million m/s" is not always correct.

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Hall · Answer 1

Because the speed of light is determined by the medium that is it in. If light is in a vacuum it goes 300 million meters per second but it is slower in air, and even slower in water because water is more dense than the previous two.