Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 75
othly finished, and theball is of steel, hardened, ground, and polished, one of thekind used for ball bearings. The period of oscillation of the ball rolling on the cycloidtrack is the same for all amplitudes. This may be readilyproved by comparing two like instruments with the ballsoscillating at… … -^ei.^,KiiA .Y- Cycloid Curve. return ball. It consists of a wooden ball attached to the endof an elastic rubber cord. By grasping the free end of thecord and swinging the ball so as to cause it to roll in a cir-cular path on the floor, the cord will be rapidly twisted.If, after twisting, the cord…
Physics · Lantern projection · Electric apparatus and appliances
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