Ophthalmic lenses, dioptric formulae for combined cylindrical lenses : the prism-dioptry, and other optical papers (1907)
Prentice, Charles F. (Charles Frederick), b. 1854 · Philadelphia : Keystone · leaf 17
y, e* e^ ;* and the refracted ray after exit, the final ray, f. * The use of superior indices wiU not prove conflicting j>s algebraic Taluee are excluded. 13 14 REFRACTION. § 2. Refraction manifests itself by an acute bend in the direction of anoblique ray of light, i, at the point of incidence,… … /^^y- Fig. 1. By virtue of the deflection or bend alluded to, the incident ray, (, mustinclude a different angle, a, with the perpendicular p^ from that, Z^, of therefracted ray e^ e; and it is by the trigonometrical values s and s^ of theseangles, which have been found to bear a constant…
Lenses · Prisms (Ophthalmology)
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