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How do you define a metre in terms of wavelength ofKr-86. |
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Answer» estion relates to a DEFINITION of the meter that was in effect from 1960 until 1986, and stated that one meter was equal to the TOTAL length of 1 650 763.73 wavelengths of the orange-red EMISSION line in the electromagnetic spectrum of the krypton-86. LOTS OF LOVE ! |
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