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 622
een C, ride upon the bench80 that their distances from A are adjustable and measurable. Onobtaining a, well-defined image of the cross wires upon the screen C.u and v can be measured upon the scale, and f can be calculated.The chief objection In the optical bench is that it must be used in adark-… … Fig. 549.—Optical bench. Expt. 131.—Focal length of a converging lens (2nd method). Replacethe screen C, Fig. 549, by a vertical plane mirror, and adjust the distanceof the lens from the cross wires until a sharp image is produced alongsideof the object. The rays must have struck the mirror…
Physics
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