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 340
ly of the nearest lantern. To exhibit the effects ofthe phantasmagoria, a screen of white muslin is stretched betweenthe instrument and the spectators, and the exhibitor, by placing thelens at some distance from the picture, forms a small image onthe screen, which is seen through the muslin by the… … 15 338 POPULAR PHYSICS. are in profound darkness. The exhibitor now pushes in the lenswith one hand, whilst with the other he draws back the apparatus,causing the image to enlarge upon the screen. The gradual enlarge-ment of the image causes the spectators, who have no means ofjudging of its exact…
Physics
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
