The Encyclopedia Americana: A Library of Universal Knowledge, Količina 10Americana corporation, 1931 |
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Zadetki 1–3 od 86
Stran 138
... employed . When that line voltage is exceeded the station voltage adopted is about 2,300 volts ; this being stepped up by transformers to the electro - motive force desired on the line . This moderate voltage admits of the use of ...
... employed . When that line voltage is exceeded the station voltage adopted is about 2,300 volts ; this being stepped up by transformers to the electro - motive force desired on the line . This moderate voltage admits of the use of ...
Stran 148
... employed an arc deflected by a magnet as a sort of blowpipe for welding iron . In addition , the curious electric heating action first published by Hoho and Lagrange has been proposed for welding metals . If a negative electrode of a ...
... employed an arc deflected by a magnet as a sort of blowpipe for welding iron . In addition , the curious electric heating action first published by Hoho and Lagrange has been proposed for welding metals . If a negative electrode of a ...
Stran 700
... employed , but this necessarily involved the freedom of men in making contracts . The law was intended more particularly to meet the evils of the apprentice system , but it did not extend to factories , where children residing in the ...
... employed , but this necessarily involved the freedom of men in making contracts . The law was intended more particularly to meet the evils of the apprentice system , but it did not extend to factories , where children residing in the ...
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18th century acid alternating current American ampere hours amperes ancient anode armature battery became body book of Enoch cable called carbon cathode cell cent century charge chemical Church circuit coil conductors connected consists constitution Consult copper corpuscle cylinder direct direct current discharge effect Egypt Egyptian elec electric current electric energy electrode electrolyte electromotive force employed engine England English faradic feet France French furnace German Greek heat horse power inches industry insulated iron king known lamp later Leyden jar light lines literature London machine magnetic manufacture mass material mechanical ment metal miles motor nature negative operation oxide Paris period persons plants plate pole positive pounds pressure produced Prussia resistance Saint speed steam temperature term theory tion tricity tube United usually voltage volts vote wattmeter welding wire writing York