Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 521
ry requiring not overone man power. The only machine work required in the construction ofthe motor illustrated is the turning of the wooden supportfor the armature ring. The materials cost less than four * Electro-plating and Electro-typing, by Urquhart, and Electro-Deposition, by Watt, are… … DYNAMIC ELECTRICITY. 499 dollars, and the labor is not great, although some of theoperations, such as winding the armature and field magnet,require some time and considerable patience. On thewhole, however, it is a very easy machine to make, and, if Fig. 489. Fig. 490.
Physics · Lantern projection · Electric apparatus and appliances
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