What is Electricity?D. Appleton and Company, 1903 - 315 pagini |
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Pagina 11
... interesting to reflect that steam is produced by the combustion of a past vegetation . The great tree ferns of the carboniferous age required for their com- plex life the transformation of the sun's energy into chlorophyl and the ...
... interesting to reflect that steam is produced by the combustion of a past vegetation . The great tree ferns of the carboniferous age required for their com- plex life the transformation of the sun's energy into chlorophyl and the ...
Pagina 12
... interesting at the opening stage of our study of electro - magnetism to consider gravitation as our measurer of electrical energy . In general terms , we measure the quantity of elec- tricity which is delivered along a wire by the ...
... interesting at the opening stage of our study of electro - magnetism to consider gravitation as our measurer of electrical energy . In general terms , we measure the quantity of elec- tricity which is delivered along a wire by the ...
Pagina 16
... interesting calculation was given in a late bulletin of the United States Weather Bureau : * " We get 1,407 cubic miles as the average annual total of water which descends as rain or snow in the United States . " To get some conception ...
... interesting calculation was given in a late bulletin of the United States Weather Bureau : * " We get 1,407 cubic miles as the average annual total of water which descends as rain or snow in the United States . " To get some conception ...
Pagina 18
... interesting from the point of view that it apparently unifies our conceptions of trans- formations of energy ; for we shall see that the ether is supposed with much reason to be the medium by means of which the waves of light , heat ...
... interesting from the point of view that it apparently unifies our conceptions of trans- formations of energy ; for we shall see that the ether is supposed with much reason to be the medium by means of which the waves of light , heat ...
Pagina 21
... interesting to follow the working of Faraday's mind on the subject of gravitation . Having opened a great field in the transformations of electricity into magnetism , and of magnetism into electricity , his mind sought to embrace the ...
... interesting to follow the working of Faraday's mind on the subject of gravitation . Having opened a great field in the transformations of electricity into magnetism , and of magnetism into electricity , his mind sought to embrace the ...
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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.