Elementary treatise on physics, experimental and applied : for the use of colleges and schools (1906)
Ganot, A. (Adolphe), 1804-1887, Atkinson, Edmund, 1831-1901, Reinold, A. W. (Arnold William), 1843-1921 · New York : Wood · leaf 599
of the material of a lens for violet rays, «a the refractive index for red rays, and ?i for mean rays, and if d^, d^, d be the corresponding deviations, we have T->- • dy, — d,^ «H—«\ Dispersive power = _--— = S: ■^. d n-i From the table given in art. 561 we see that for light crown glass «„ —…
Physics
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