Millikan, Robert Andrews, Gale, Henry Gordon · Boston : Ginn and Co. · leaf 492
se of the Alexanderson high-frequency alternator (see on opposite page). This is analternating-current dynamo made in various powers up to200 kilowatts (=268 horse power), the rotor in some of themachines having the very high speed of 20,000 revolutionsper minute. For transoceanic telegraphy these… … - 2 g s ^ b S> V u ^ 03 03 1^ 9 *^ H is
Physics
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