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Results tagged with metrology
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user 121297
For questions about the science of measurement, such as how units are defined or how practical measurements are connected to those definitions.
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Do we have a better approximation of $c$ than 299792458 m/s?
This is an exact value. Meter is defined by the speed of light.
Meter is a distance that the light travels during $\frac{1}{299792458}$ of a second.
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