Austin, Louis W. (Louis Winslow), 1867-1932, Thwing, Charles B. (Charles Burton), 1860-1946, joint author · Boston, Allyn and Bacon · leaf 50
, and, sighting over its top, point it at the ELASTICITY 37 mirror. When the mirror is found, cnange the ±ocus untilthe scale (which is optically twice as far away as themirror, and hence demands a shorter focus) is distinctlyseen. Next, to prevent parallax, adjust the cross-wires bysliding the… … Fig. 12. ring to the point of support. Measure the diameter ofthe wire, d, from which compute the area of the cross-sec-tion, a. Measure r and i?, and, by the method describedabove, find the scale readings for an addition of 1, 2,and 3 kgs., taking the readings both as the weights areadded and…
Physics
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