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 338
e plate of glass, ah,upon which the picture is painted. Finally, a combinationof two lenses, ???, acting as a single convex lens, is placed so Upon what doe,* the magnifying power depend? Why is a second lens addedto the eye-piece ? If aw great may the magnifying poioer be made? How is theobject… … Fig. 221. that the plate, ab, shall be a littl ;* 1 eyond its principal focus.At this distance the lenses produce (as shown in Fig. 19G)a magnified and inverted image of the picture painted on
Physics
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