f the velocity of the body (which emits them. If, in figure88, a body moving from Q towardP emits a wave when it is at thepoint X, this wave spreads outinto an enlarging circle whose cen-ter remains al X and does not follow the emitting body. If thecircle, with X as center, has a radius equal to e,… … Figure 172 LIGHT
Light
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
