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OpenStudy (anonymous):
How lasers used to determine the distance from earth to the moon? Just need a general idea, thanks for any help!!
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OpenStudy (anonymous):
There are "mirrors" on the moon that scientist placed there when we visited it. So they time how long it takes the light to go there and back. Since we have an accepted value for the speed of light it is a simple calculation to figure out how far the distance is.
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