kejuanM9038 kejuanM9038

12-10-2017
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What is the current basis of the meter (1983)?

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Kalahira Kalahira

21-10-2017

The meter is defined as the distance that light travels in 1/299 792 458 of a second in a vacuum. This basis is accurate because the speed of light is constant in a vacuum, by Einstein's theory of relativity.

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