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 313
Fig. 203. Explain Vie reflectors used hy Fresnel. 310 POPULAR PHYSICS, … I Fig. 2<M. Besides this refracting system, several ranges of reflectors, mn, areso disposed as to reflect such light as would otherwise be lost, toincrease the beam of light formed by refraction. By this double combination, an immense beam of light is afforded,which renders the light visible…
Physics
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