why SI unit of length is metre in SI system?
Answers
Answered by
5
The SI unit of length, the metre (m), takes its name from Greek and French nouns for “measure”. ... It follows that the speed of light in vacuum (c0) is exactly 299 792 458 metres per second (m/s). The 1983 definition defines the metre in terms of a fundamental constant, the speed of light in a vacuum.
Similar questions