Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 544
Diagram and Cross Section of Weston Armature. beginning of one coil of the first series, represented by theblack lines, is connected with a commutator bar, and theend of the same coil and beginning of the next black coil are Fig. 505. … Commutator Connections. connected with the second commutator bar in advance. Thecoils represented by the black lines are thus connected withalternate bars of- the commutator, and in a similar manner q 22 EXPERI-MENTAL SCIENXE.
Physics · Lantern projection · Electric apparatus and appliances
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