The Encyclopedia Americana: A Library of Universal Knowledge, Količina 10Americana corporation, 1931 |
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Zadetki 1–3 od 80
Stran 118
... circuit ; the armature itself also being a part of the circuit . The circuit is normally open at the push button . When this button is pressed the circuit is closed and the armature of the bell is forthwith attracted , its hammer ...
... circuit ; the armature itself also being a part of the circuit . The circuit is normally open at the push button . When this button is pressed the circuit is closed and the armature of the bell is forthwith attracted , its hammer ...
Stran 119
... circuit extending to the central office , and the said wires are so connected with the circuit that any interference with them , after they have been " set , " will cut out a high resistance , consisting of a coil of wire , suitably ...
... circuit extending to the central office , and the said wires are so connected with the circuit that any interference with them , after they have been " set , " will cut out a high resistance , consisting of a coil of wire , suitably ...
Stran 176
... circuit of the primary wire he placed a battery of approximately 100 cells . In the secondary wire he inserted a galvanometer . On making his first test he ob- served no results , the galvanometer remaining quiescent , but on increasing ...
... circuit of the primary wire he placed a battery of approximately 100 cells . In the secondary wire he inserted a galvanometer . On making his first test he ob- served no results , the galvanometer remaining quiescent , but on increasing ...
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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