The Encyclopedia Americana: A Library of Universal Knowledge, Količina 10Americana corporation, 1931 |
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Zadetki 1–3 od 54
Stran 139
... conductors in this service is virtually confined to copper and aluminum . It is known that there is a tendency to a brush discharge , termed corona , in the air between conductors conveying currents at high pressures that leads to a ...
... conductors in this service is virtually confined to copper and aluminum . It is known that there is a tendency to a brush discharge , termed corona , in the air between conductors conveying currents at high pressures that leads to a ...
Stran 142
... conductors in a cable will vary with the purpose for which the cable is designed . Telephone cables for underground use may con- sist of as many as 400 conductors , which are first twisted in pairs and are then cabled by a cabling ...
... conductors in a cable will vary with the purpose for which the cable is designed . Telephone cables for underground use may con- sist of as many as 400 conductors , which are first twisted in pairs and are then cabled by a cabling ...
Stran 143
... conductors are well insulated and laid di- rectly in the earth ; or in which the conductors are laid in notches in a tube or duct , by which means they are kept apart . The tube is then filled with an insulating compound , which , when ...
... conductors are well insulated and laid di- rectly in the earth ; or in which the conductors are laid in notches in a tube or duct , by which means they are kept apart . The tube is then filled with an insulating compound , which , when ...
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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