Ophthalmic lenses, dioptric formulae for combined cylindrical lenses : the prism-dioptry, and other optical papers (1900)
Prentice, Charles Frederick, b. 1854 · Philadelphia : Keystone · leaf 22
icular p-has a greater tendency to parallelism with the horizontal line 7i° than p^.Such parallelism being realized—when a- c- is parallel to or h^ ot a- ^= 0°—would result in the value s^ vanishing in the incident ray i^, and s in thefinal ray /_, by virtue of the decrease of the angles of… … § 6. In general we may therefore be permitted to assume that the greaterthe angle, a, of obliquity of the surfaces (Fig. 4) the greater will be the de-flection of the final ray f, and the closer to the base he of the prism will beits intersection n with the horizontal line h°. In looking through a…
Lenses
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