Chapter 39 of 41
Change of Speed of Rotation.
Experimental Determination of the Velocity of Light Made at the U.S. Naval Academy, Annapolis · Albert A. (Albert Abraham) Michelson
In the last four sets of observations the speed was lowered from 256 turns to 192, 128, 96, and 64 turns per second. The results with these speeds were the same as with the greater speed within the limits of errors of experiment.