Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 517
- in its winding. For metallurgical work alarge current of low voltage is required. For electro-typ-ing, an electro-motive force of three to four volts is sufifi- FiG. 4S2. … Sr.S^; Electro-Plating Dynamo. cient, while for nickel plating it should run up to aboutsix volts, and for silver plating to about five. In a small dynamo, like the one illustrated in Fig. 482, itis impossible to secure as wide a range of electro-motiveforce or of current as can be realized in a…
Physics · Lantern projection · Electric apparatus and appliances
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