What is Electricity?D. Appleton and Company, 1903 - 315 pagini |
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Pagina 2
... STEAM - ENGINE . By Pro- fessor R. H. THURSTON , Cornell University . With 163 Illustrations . $ 2.50 . 25. EDUCATION AS A SCIENCE . BY ALEXANDER BAIN , LL . D. $ 1.75 . 26. STUDENTS ' TEXT - BOOK OF COLOR ; or , Modern Chromatics ...
... STEAM - ENGINE . By Pro- fessor R. H. THURSTON , Cornell University . With 163 Illustrations . $ 2.50 . 25. EDUCATION AS A SCIENCE . BY ALEXANDER BAIN , LL . D. $ 1.75 . 26. STUDENTS ' TEXT - BOOK OF COLOR ; or , Modern Chromatics ...
Pagina 11
... steam engine which produces the current . The doctrine of the conservation of energy is little more than a hundred years old . Count Rumford made his celebrated measurement of the heat produced by the boring of a cannon in 1789. Yet in ...
... steam engine which produces the current . The doctrine of the conservation of energy is little more than a hundred years old . Count Rumford made his celebrated measurement of the heat produced by the boring of a cannon in 1789. Yet in ...
Pagina 11
... steam engine . By means of this great invention of Watt we obtain our electrical currents ; and when it is said that electricity will some day supersede steam , we can assert with a similar show of reason that flying may some day take ...
... steam engine . By means of this great invention of Watt we obtain our electrical currents ; and when it is said that electricity will some day supersede steam , we can assert with a similar show of reason that flying may some day take ...
Pagina 11
... steam . We thus see in New England the manufacturing towns of New Bedford and Fall River , where there is no water power , competing in number of spindles with Lowell and Lawrence , on the banks of the Merrimac River . In studying the ...
... steam . We thus see in New England the manufacturing towns of New Bedford and Fall River , where there is no water power , competing in number of spindles with Lowell and Lawrence , on the banks of the Merrimac River . In studying the ...
Pagina 11
... steam engine has exalted this apparently feeble effect discovered by Faraday into a power which is only limited by that of the steam engine or the water power which we employ . CHAPTER II . MEASUREMENTS IN ELECTRICITY . WE have said 10 ...
... steam engine has exalted this apparently feeble effect discovered by Faraday into a power which is only limited by that of the steam engine or the water power which we employ . CHAPTER II . MEASUREMENTS IN ELECTRICITY . WE have said 10 ...
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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 302 - ... 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 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.