Lummer, O. (Otto), 1860-1925, Thompson, Silvanus P. (Silvanus Phillips), 1851-1916 · London, New York, Macmillan and Co., 1900 · leaf 144
a spherical refracting surface bounding the junction of two refracting media. Following von Seidel’s notation (p. 104, ante\ we will use odd sufl&xes for the media, and even suffixes to denote the surfaces. If this first surface is numbered zero, then the refractive indices of the anterior and… … demonstrate the geometrical relations between the incident and refracted rays. Let the luminous point be considered as situated at L, at an infinite distance to the left along the axis S^Mq, so that its rays are a beam parallel to this axis. Then any single ray of this beam will be characterised by…
Photographic optics
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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