What is Electricity?D. Appleton and Company, 1903 - 315 pagini |
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Pagina 2
... Photographic Illustrations of Spectra , and 52 other Illustrations . $ 2.50 . 24. A HISTORY OF THE GROWTH OF THE STEAM - ENGINE . By Pro- fessor R. H. THURSTON , Cornell University . With 163 Illustrations . $ 2.50 . 25. EDUCATION AS A ...
... Photographic Illustrations of Spectra , and 52 other Illustrations . $ 2.50 . 24. A HISTORY OF THE GROWTH OF THE STEAM - ENGINE . By Pro- fessor R. H. THURSTON , Cornell University . With 163 Illustrations . $ 2.50 . 25. EDUCATION AS A ...
Pagina 27
... photograph . During the days , therefore , of Prof. Winthrop the knowledge of electrical phenomena was extremely small . It was confined to the observation of the attrac- FIG . 2 . tion of magnets and of the phenomena of frictional ...
... photograph . During the days , therefore , of Prof. Winthrop the knowledge of electrical phenomena was extremely small . It was confined to the observation of the attrac- FIG . 2 . tion of magnets and of the phenomena of frictional ...
Pagina 79
... sufficient distance from the plate of the battery the liquid is in repose . A beam of light sent through it is not absorbed by the liquid more or less when the current flows . A photograph taken by means of light THE VOLTAIC CELL . 79.
... sufficient distance from the plate of the battery the liquid is in repose . A beam of light sent through it is not absorbed by the liquid more or less when the current flows . A photograph taken by means of light THE VOLTAIC CELL . 79.
Pagina 80
John Trowbridge. current flows . A photograph taken by means of light which has passed through a layer of liquid traversed by an electric current differs in no respect from one taken through an equal layer of the liquid not traversed by ...
John Trowbridge. current flows . A photograph taken by means of light which has passed through a layer of liquid traversed by an electric current differs in no respect from one taken through an equal layer of the liquid not traversed by ...
Pagina 117
... photographic plate , producing before accomplishing this result waves in the ether of space . It is probable that we know little of the effect of electro - magnetic waves in the ether in trans- forming or changing the rates of molecular ...
... photographic plate , producing before accomplishing this result waves in the ether of space . It is probable that we know little of the effect of electro - magnetic waves in the ether in trans- forming or changing the rates of molecular ...
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Termeni și expresii frecvente
action alternating current apparatus attraction bodies carbon cathode rays centimetres charged circuit coil of wire conductor connected copper copper wire Crookes tube current of electricity detect direction discharge distance dynamo dynamo machine earth effect elec electric current electric spark electric waves electrical energy electrical machine electro-magnetic electro-magnetic waves electro-motive force employed ether excited experiments Faraday fluid galvanometer glass gravitation horse power Illustrations inch insulated iron J. J. Thomson lamp Leyden jar lines of force lines of magnetic magnetic force manifestations means measure medium metals method mirror molecular molecules motor movement needle obtained ordinary oscillations oxygen pass phenomena phenomenon photograph pipes placed plate polarization pressure produced Prof refraction resistance revolving Ruhmkorff coil self-induction south pole space spark gap spool steam engine storage battery suitable telephone terminals theory tion to-and-fro currents transformations of energy transmitted tric tricity tube velocity vibrations voltaic cell zinc
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Pagina 262 - In extending the researches relative to this part of the investigations, a remarkable result was obtained in regard to the distance at which inductive effects are produced by a very small quantity of electricity; a single spark from the prime conductor of the machine, of about an inch long, thrown on the end of a circuit of wire in an upper room, produced an induction sufficiently powerful to magnetize needles in a parallel circuit of wire...
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Pagina 199 - Electrical matter differs from common matter in this, that the parts of the latter mutually attract, those of the former mutually repel each other.