Preston, Thomas, Joly, Charles Jasper, 1864-1906, Parsons, John Herbert, Sir, 1868-1957, donor, University College, London. Library Services · London : Macmillan and Co. · leaf 105
centre of a reflected wave, and as the original wave moves farther to the right, each point of the surface in turn becomes the centre of a reflected wave. Thus when the incident wave occupies the position XY, the part between A and B will have been reflected by the surface into the wave AN'B, such… … Fig. 38. Fig. 37. ture of the surface and NN' is proportional to the curvature of the reflected wave. But and we conclude that the curvature of the reflected wave is twice that of the reflecting surface. The action of the surface in reflecting a Impressed plane wave is therefore to imprint on the…