Ophthalmic lenses, dioptric formulae for combined cylindrical lenses : the prism-dioptry, and other optical papers (1900)
Prentice, Charles Frederick, b. 1854 · Philadelphia : Keystone · leaf 18
on. As our proposed treatment of its manifestation bylenses is to be strictly elementary, we must first define the law of refraction,at least so far as applied to parallel rays, in air, impinging upon and pass-ing through transparent optical glass. In the accompanying diagram. Fig.1, a piece of… … Fig. 1. For convenience we shall term the ray prior to its contact with the glass,the incident ray, i; the ray during transit within the glass, the refractedray, e^ e^ ;* and the refracted ray after exit, the final ray, f. * The ms€ of superior Indices wiU not prove conflicting as algebraic ralues…
Lenses
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