What is the ABSOLUTE value of the speed of propagation of electromagnetic waves in a vacuum?

Correct answer: Speed of light

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What people think about it: 2 Comments
Player #25874027
Player #25874027
A metre may now have become defined by the speed of light in one 300000th of a second , but when it was introduced, in Napoleonic times, I seriously doubt they could even time 100th of a second. The original metre was based on the length of the Equator
That Cøunt, Ray Bumpkin
That Cøunt, Ray Bumpkin
Player #25874027, the origin of the metre, defined in 1791, was based on distance of North pole to the equator, specifically as 10,000,000 metres.