A text book of physics, for the use of students of science and engineering (1918)
Duncan, John, d. 1941, Starling, Sydney George, 1873- · London Macmillan · leaf 628
focal length is employed to form an imagemagnifying the object three times. Show that there are two possiblepositions of the object. Distinguish between the images formed in thetwo cases. L.U. 17. A convex lens casts an image equal in size to the object which isplaced 20 cm. away from the lens. If… … OPTICAL INSTRUMENTS Photographic camera.—Perhaps the simplest application of lensesfor optical purposes is found in the photographic camera, in whicha lens, or lens system, produces a real image of an external object.The lens system L (Fig. 555) maybe a single converging lens, or acombination of…
Physics
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
