Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 579
shedalmost indefinitely by increasing the size and conductivity of thewires, and as regards the iron, a form of armature has been de-vised which is best illustrated in the Gramme machine, theoriginal conception of which is due to Dr. Pacinotti. This consistsin putting the iron, constituting the… … Fig. 358. being surrounded by a non-conducting material, electric eddiescannot circulate in the direction in which they would occur,namely, transversely to that of the wires, whereas the magneticpoles induced by the field-magnets are free to advance withinthe iron wires at the rate of the rotative…
Electrical engineering
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