eceives is less, if it is receding from him greater, thanif there is no motion. The reason is easily explained by figure 71. Suppose thatthe source of waves is moving in the direction of the arrow P,with a velocity v, and let V be the velocity of the waves them-selves. Bear in mind that V depends… … 134 LIGHT circle with A as center, despite the fad that the source movesaway from A in the meanwhile. Let A, B, C, etc., be positionsof the source at instants differing by a period, so that-a crestis started from each of these points. Then at any later instantthe wavefronts will be circles, as…
Light
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
