Ophthalmic lenses, dioptric formulae for combined cylindrical lenses : the prism-dioptry, and other optical papers (1900)
Prentice, Charles Frederick, b. 1854 · Philadelphia : Keystone · leaf 155
f the refracted pencil, d^E, which does enter theeye, however, will result from that incident |>encil whose axis is obliquerelatively to the normal at a?, and it will therefore be a ray approaching 146 THE PRISMOMETRIC SCALE. direction for minimum deviation and will consequently suffer less… … bar, it is evident that an error will be committed, since 10 times Oivfill beless than 10 times 6>/; * yet this seeming weakness in the authors pre-vious papers has escaped detection by the critics of the prism-dioptralsystem, and for the consolation of whom let it now be said that therecould…
Lenses
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