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 587
awn as if they were incident at all parts of the lens from thecentre to the edge, butin practice it is only thecentral part of the lenswhich is used ; unlessthe angle DFE is con-fined to 10° or 12°, therefracted rays do noteven approximately passthough a single point. If the incident raysstart from…
Physics
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