So basically all the resources on the net use this formula as if it's "too well known" to be explained.
Where m is the number of fringes observed, and L is the length of the gas-cell in the Michelson Interferometer.
I just want to know where I can find a derivation for this formula. I know in PGRE one won't derive anything
but I want to learn, not just to pass PGRE.
bfollinprm wrote:Doesn't go farther, just takes additional time to go the same distance. The retardation is given by , verified by simple dimensional analysis to be expressed in meters (that the light would have traveled in that time).
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