Handbook of optics for students of ophthalmology (1899)
Souter, William Norwood, 1961-1935 · New York, Macmillan · leaf 182
ation of the object. t Chap. I., p. 21. 172 HANDBOOK OF OPTICS former being nearer the apex and the latter nearerthe base of the prism than BOB. As has beenstated, the pencil BOB undergoes no change inlength. By the first refraction the pencil SOS isincreased in length, for OS makes a greater… … Fig. 46 reason increased; but since the angles of refractionare greater at the first surface, the difference in theamount of deviation undergone by OS and OS* isgreater at this than at the second surface ; conse-quently the lengthening of the first surface out-balances the shortening at the second…
Eye · Lenses
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