Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 522
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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