The Encyclopedia Americana: A Library of Universal Knowledge, Količina 10Americana corporation, 1931 |
Iz vsebine knjige
Zadetki 1–3 od 79
Stran 101
... field magnets : There are a number of constructions which may be employed . ( 1 ) The so - called permanent steel magnet which consists of a bar or bars of steel bent to the shape desired , tempered and magnetized . The method of ...
... field magnets : There are a number of constructions which may be employed . ( 1 ) The so - called permanent steel magnet which consists of a bar or bars of steel bent to the shape desired , tempered and magnetized . The method of ...
Stran 203
... field of the first coil was at its maxi- mum phase when the cathode ray passed through the first diaphragm , and ( if the sec- ond coil did not displace the luminous spot on the screen ) it was also known that the magnetic field of the ...
... field of the first coil was at its maxi- mum phase when the cathode ray passed through the first diaphragm , and ( if the sec- ond coil did not displace the luminous spot on the screen ) it was also known that the magnetic field of the ...
Stran 204
... field of intensity E and to a magnetic field of intensity H , it is possible , if the directions of the lines of force are properly chosen , and the respective intensities H and E are properly related , to cause the two fields to ...
... field of intensity E and to a magnetic field of intensity H , it is possible , if the directions of the lines of force are properly chosen , and the respective intensities H and E are properly related , to cause the two fields to ...
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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