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Why is the statement speed of light is 300 million miles per second is not always correct?
Wiki User
∙ 12y ago
First of all it's 300 million metres per second (299,792,458 m/s). this is in a vacuum when the speed of electromagnetic radiation is at its greatest.
Wiki User
∙ 12y ago
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Why is the statement the speed of light is 300 million not always correct?
The speed of light, or c, is a constant. The speed of light is exactly 299,792,458 meters per second IN A VACUUM. That's 670,616,629.2 miles per hour or 983,571,056 feet per second.
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I'm going to remark that "The speed of light is 3 million meters per second" is NEVER correct. The speed of light in vacuum ... within 0.07% ... is 3 hundredmillion meters per second. The speed is different in any material medium, but a speed of 3 million m/s would imply a medium with a refractive index of 100, and I'm pretty sure that no such material exists.
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