The Encyclopedia Americana: A Library of Universal Knowledge, Količina 10Americana corporation, 1931 |
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Zadetki 1–3 od 86
Stran 190
... Iron and Steel can be produced by reducing iron ore with carbon in an electric furnace . For example , a mixture of magnetite and carbon can be heated by passing a current through it , as in the Cowles aluminum bronze process , by ...
... Iron and Steel can be produced by reducing iron ore with carbon in an electric furnace . For example , a mixture of magnetite and carbon can be heated by passing a current through it , as in the Cowles aluminum bronze process , by ...
Stran 199
... iron is a much better conductor of mag- netic lines of force ( or magnetism ) than air , in the ratio of 1 to 100 or 150 , depending on the quality or " permeability of the iron . Hence when the wire is made in the form of a coil into ...
... iron is a much better conductor of mag- netic lines of force ( or magnetism ) than air , in the ratio of 1 to 100 or 150 , depending on the quality or " permeability of the iron . Hence when the wire is made in the form of a coil into ...
Stran 462
... iron ab- sorbing the oxygen with the formation of oxide of iron , while the hydrogen escapes in the free state ; but if hydrogen is passed over red - hot oxide of iron the oxide is reduced to the metal- lic state , its oxygen combining ...
... iron ab- sorbing the oxygen with the formation of oxide of iron , while the hydrogen escapes in the free state ; but if hydrogen is passed over red - hot oxide of iron the oxide is reduced to the metal- lic state , its oxygen combining ...
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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