Gilley, Frank M · Boston, Allyn & Bacon · leaf 369
picture on glass, a lantern slide, or asmall piece of apparatus —is lighted by the suns raysreflected by a mirror. Thescreen, S, is a white wall orcurtain. The relative sizesof the object and image de-pend on their distances from the lens. When an oil lamp,a lime light, or an arc light is used, the… … Fig. 3 3 5. fracted by the lens C upon the object, ab, which of course ispartly transparent. The lens I brings the rays from ab toa focus on the screen, S, making the image, AB. Problems. 1. The object distance in a magic lantern is 4 inches; the distancefrom the lens to the screen is 40 inches;…
Physics
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