Duff, A. Wilmer (Alexander Wilmer), b. 1864, ed, Guthe, Karl Eugen, 1866-1915, Hallock, William, 1857-1913, Lewis, E. Percival (Exum Percival), 1863-1925, Goodspeed, Arthur W. (Arthur Willis), b. 1860, Carman, Albert Pruden, b. 1861, McClung, Robert Kenning, 1874- · Philadelphia, P. Blakiston's Son & Co · leaf 381
ven in § 422,we see that in the case of a convex mirror v is always less than /and negative. If, however, the light incident on the mirror isconvergent to a point at a distance —u behind the mirror, v maybecome positive; so that a convex mirror may give a real imageof a virtual source. 424.… … D, be reflected back on itself. The ray SP will be reflected at P, sothat the angles i and r are equal. The intersection of these two reflectedrays will fix the position of the image ^i. From a well-known geometricalrelation we have SC SD—CD u — r u Therefore, From which Dividing through by uvr^…
Physics
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