Can anyone give me the derivation of speed of light c?
Don't know, myself, but this looks good. http://cr4.globalspec.com/blogentry/270/Deriving-the-Speed-of-Light
Essentially, it was determined to some accuracy by Michelson's improvements on the Fizeau–Foucault experiement.
derivation of speed of electromagnetic waves in vacuum based on Maxwell's equation is given here http://physics.stackexchange.com/questions/1574/deriving-the-speed-of-the-propagation-of-a-change-in-the-electromagnetic-field-f
just turn a wheel with slits in it, shine a lamp on it, and place a mirror 500 meter or so away. Turn the wheel, look through the slits and vary the speed of the wheel until you see light in the mirror. Measure the wheel rotation speed. Now you can derive the speed of light on earth.
Join our real-time social learning platform and learn together with your friends!