definition of 1meter??
Answers
Answer:
Metre. ... The metre is defined as the length of the path travelled by light in a vacuum in 1299 792 458 of a second. The metre was originally defined in 1793 as one ten-millionth of the distance from the equator to the North Pole – as a result, the Earth's circumference is approximately 40,000 km today.
Unit of: length
Unit system: SI base unit
SI units: 1000 mm; 0.001 km
Imperial/US units: ≈ 1.0936 yd; ≈ 3.2808 ft; ≈ 39.370 in
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Answer:
definition of a meter was not quite precise. Then it became the steel metal bar that is currently kept in a vacuum safe in the International Standards Institute (I think that's its name) in Paris. I don't know if it was converted into an EM frequency definition (if we have an exact metric definition of c), but of course you can find the ("almost" at least) accurate value by [nu] = c / [lamb] with [lamb] = 1 m .
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