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 617
we have 1 , - v v r2remembering that the index of refraction for a ray passing from glasstoairisl//x; # 1 ^>_ ^-1 (2) 592 LIGHT chap. Adding equations (1) and (2) for the two surfaces, we get I_i.0;Ji)(i-i) • (3) If the object A be at infinity, the rays from it are parallel, andl/u = 0, but in… … Fig. 542.—Convex lens. Example.—A double convex lens has radii of curvature 16 and 24 cm.respectively, and the glass has index of refraction 1-5. Find the focallength of the lens, and the position of the image when the object is 32 cm.from it. r1= - 24 and ra = +16; In Fig. 542, 1 / 1 1\ l/5\ (from…
Physics
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