The Encyclopedia Americana: A Library of Universal Knowledge, Količina 10Americana corporation, 1931 |
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Zadetki 1–3 od 81
Stran 122
... material , nickel peroxide . This material , however , hap- pens to be an extremely poor electrical con- ductor , and in order to give it the necessary conductivity the material within the tube is interspersed with extremely thin ...
... material , nickel peroxide . This material , however , hap- pens to be an extremely poor electrical con- ductor , and in order to give it the necessary conductivity the material within the tube is interspersed with extremely thin ...
Stran 126
... material . The grid , Fig . 12 , is , however , more substantial FIG . 11 . - Vehicle Exide Positive Plate - and General Service . Approx . 1/5 size . ent manufacturers as positive active material , the usual material is red lead , PbO4 ...
... material . The grid , Fig . 12 , is , however , more substantial FIG . 11 . - Vehicle Exide Positive Plate - and General Service . Approx . 1/5 size . ent manufacturers as positive active material , the usual material is red lead , PbO4 ...
Stran 140
... material used for telephone conductors is usually a wrapping of tissue paper in narrow strips , laid on spirally over each conductor . The insulating material of telegraph underground cables is usually a rubber compound or strips of ...
... material used for telephone conductors is usually a wrapping of tissue paper in narrow strips , laid on spirally over each conductor . The insulating material of telegraph underground cables is usually a rubber compound or strips of ...
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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