Preston, Thomas, Joly, Charles Jasper, 1864-1906, Parsons, John Herbert, Sir, 1868-1957, donor, University College, London. Library Services · London : Macmillan and Co. · leaf 549
MICHELSON'S AND MOKLEY'S EXPERIMENTS ART. 315 i25 the transmitted part of BA and the reflected part of CA will interfere along AD. Let us suppose now that the ether is at rest, and tliat the earth moves in the direction AC, so that the mirror A is carried to A', while the reflected light travels to… … Let V be the velocity of light, u the velocity of the Ciirth, D the distance AB or AC, T the time occupied by the ray in passing from A to C, and T' the time in returning from C to A'. Then, since C is moving with velocity u, we have vT = J) + uT, so thnt and the whole time is therefore T + T'-2D…
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