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speed of light

In search of accurate measurements — The speed of light

February 22, 2017 By David Herres Leave a Comment

interferometer

If an instrument is to give accurate measurements, it must first have been calibrated to a standard. In metrology, a standard (or etalon) is an object, system, or experiment that bears a defined relationship to a unit of measurement of a physical quantity. Standards are the fundamental reference for a system of weights and measures, […]

Filed Under: Calibration, FAQ Tagged With: basics, FAQ, speed of light

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