Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 56
^ be exhibited. EQUATORIAl.LY MOUNTED ELECTRICAL INDICATOR. In Fig. 21 a gyroscope is shown which is suspended withthe axis of the wheel-supporting frame, C, at right angles Fig. 21. … Electrical Indicator. to the plane of the equator and parallel with the polar axisof the earth. The frame, C, is suspended by silk threadsfrom studs that project from the beam, A. Two vulcanitemercury cups are supported by the beam, B, in position tomake an electrical connection with the disks on…
Physics · Lantern projection · Electric apparatus and appliances
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