Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 39
inear ray passing from thispoint because, from the slight thickness of the lens, it may be assumedthat rays passing through the optical center are on a right line. Formation of Images by Double Convex Lenses.—In lenses as well as in mirrors, the image of an object is the col-lection of the foci of… … Fig. 3,800.—Formation of virtual image by double convex lens; object AB, placed between thelens and its principal focus. If a secondary axis OA be drawn from the point A, every rayAC, after having been twice refracted, diverges from this axis on emerging, since the point Ais at a less distance than…
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
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