What is Electricity?D. Appleton & Company, 1896 - 315 pagini |
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Pagina 8
... 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 body 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 flow 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 tricity tube velocity vibrations voltaic cell zinc
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Pagina 314 - SOUND : a Series of Simple, Entertaining, and Inexpensive Experiments in the Phenomena of Sound, for the use of Students of every age.
Pagina 296 - ... of our planet, so far as we know it; and nitrogen is very far the predominant constituent of our atmosphere. If the earth is a detached bit whirled off the mass of the sun, as cosmogonists love to tell us, how comes it that in leaving the sun we cleaned him out so completely of his nitrogen and oxygen that not a trace of these gases remains behind to be discovered even by the sensitive vision of the spectroscope...
Pagina 256 - 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...
Pagina 313 - Part I. MECHANICS, HYDROSTATICS, and PNEUMATICS. Part II. HEAT. Part III. ELECTRICITY and MAGNETISM. Part IV.
Pagina 118 - Faraday, in his mind's eye, saw lines of force traversing all space where the mathematicians saw centres of force attracting at a distance : Faraday saw a medium where they saw nothing but distance : Faraday sought the seat of the phenomena in real actions going on in the medium, they were satisfied that they had found it in a power of action at a distance impressed on the electric fluids.