econd. Thus each turn took 1/12-6 seconds andteeth and adjacent spaces interchanged positions in 1/12-6 x 2 x 720 second. This reduces to 1/18144 of a second, and in this time the lighthad travelled 2 x 8663 or 17326 metres. Thus the velocity of light is from these experiments17326 x 18144 or about… … Fig. 15. *20. Foucaults Method. method light from a smallsource, a narrow slit, S&g. 16,falls on a mirror JK, is reflectedto another mirror M, reflectedback to -ff, and hence back toS if JK remains fixed. Themirror R however can be madeto rotate about a vertical axis,so that by the time the…
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