Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 152
solid iron bases, the revolution of whichcaused the production of heat in the body of the armature, and,second, considerably lessened the efficiency of the machine. EDISON S INCANDESCENT SYSTEM. 137 Various devices were adopted to remove this heating, such asblowing a current of air or passing a… … Fig. 60. this direction. He undertook to ascertain what was the cause ofthe heating of the body of such armatures. He revolved ablock of iron between the poles of an electro magnet, and, afterrunning the same five minutes, it was found that a piece ofmeat laid upon it could be well cooked by the…
Electrical engineering
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