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 327
ially of a convex object-glass, which collects the rays from an object, and a concaveeye-piece, by meanc of which the rays from each point ofthe object are rendered parallel, and capable of producingdistinct vision. Fig. 212 shows the course of the rays in the Galileantelescope. Pencils of rays… … rig. 212. the object-glass, being at a distance from the image equalto its principal focal distance. In consequence of thisarrangement, the pencil of light coming from A, is convergedby the object-glass, and falling upon the eye-piece, is di-verged and refracted so as to appear to the eye to…
Physics
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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