with the plane confocalto the plane of 0 will give the image I. It follows at oncethat equation (13) holds for mirrors as well as lenses. Butin the case of a mirror, the image is inverted if it lies on thesame side as the object, erect if on the opposite side. An important application of the… … -Ffff-f-f-*. +4» Figure 51 direction in winch the light is propagated from them, in planewaves. If either star lay on the prolongation of the axis BM,its light would be focussed at the principal focus F. Other-wise, if the angles CBM and DBM are small, not more thana few degrees, the image of each…
Light
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
