Definition Of The MetreYou are currentlybrowsing as guest. Click here to log in |
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Broadly speaking, the original definition of the metre was
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This was adopted in competition with the definition of
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The definitions are remarkably similar because of the coincidence that $\pi^2$ is very nearly equal to g, acceleration due to gravity.
However, both definitions have problems. You can read more about them in the Wikipedia article quoted below.
More recently, the metre has been redefined as:
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Thus the speed of light is now, by definition, 299 792 458 m/s.
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