Ophthalmic lenses, dioptric formulae for combined cylindrical lenses : the prism-dioptry, and other optical papers (1900)
Prentice, Charles Frederick, b. 1854 · Philadelphia : Keystone · leaf 24
g. 5), PEISMS. 19 we find the refraction active in the horizontal plane (i** to /), and for anobliquity of the surfaces in the vertical plane V (Fig. 6), the refraction isactive in the vertical plane (i^ to /^). Here, in the sense that the final rays are confined to the plane of inci-dence, we may… … Fig. 7.Prism, Base oblique; Refraction diametrically opposed. § 9. It is evident that the refraction is active in one and passive in theother plane for a medium whose surfaces are oblique in but one plane, sothat to obtain the refraction active in both fixed planes an obliquity of thesurfaces…
Lenses
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