The Encyclopedia Americana: A Library of Universal Knowledge, Količina 10Americana corporation, 1931 |
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Zadetki 1–3 od 82
Stran 114
... light is hidden , casting its full glare upward toward a white ceiling , from which a soft radiance is reflected downward over the surroundings . This plan diffuses the light in a most acceptable manner . The low value of the common ...
... light is hidden , casting its full glare upward toward a white ceiling , from which a soft radiance is reflected downward over the surroundings . This plan diffuses the light in a most acceptable manner . The low value of the common ...
Stran 169
... Light . For lighting , electric energy usually is first converted into heat and the light given by the incandescence of very refractory solid substances , carbon or tungsten ( wolfram ) , the tungsten wire or carbon filament of the in ...
... Light . For lighting , electric energy usually is first converted into heat and the light given by the incandescence of very refractory solid substances , carbon or tungsten ( wolfram ) , the tungsten wire or carbon filament of the in ...
Stran 197
... light in agri- culture and horticulture . It was determined at the Agricultural Experiment Stations of Cornell University and of West Virginia , in experiments made with the arc and the incandescent lights , respectively , that cer ...
... light in agri- culture and horticulture . It was determined at the Agricultural Experiment Stations of Cornell University and of West Virginia , in experiments made with the arc and the incandescent lights , respectively , that cer ...
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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