Introductory course of natural philosophy for the use of schools and academies. Ed. from Ganot's popular physics. By William G. Peck (1869)
Ganot, Adolphe, 1804-1887, Peck, William Guy, 1820-1892 · New York A.S. Barnes · leaf 301
cident upon the secondsurface, and is refracted from the normal. This action isentirely analogous to that of a prism, the deviation beingtowards the thicker portion in both cases. In fact, if wesuppose planes to be drawn tangent to the surfaces at thepoints of incidence and emergence, they may be… … Fig. 1S9. Where is the optical centre in this case? How do you find a normal? (298.)Explain the action of a convex lens on light. (299.) What is the principalfocus? LENSES. 299 point is called the principal focus, and its distance fromthe lens is called the principal focal distance. The course of…
Physics
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
