What is Electricity?D. Appleton and Company, 1903 - 315 страници |
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Страница 11
... 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 WHAT IS ELECTRICITY ?
... 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 WHAT IS ELECTRICITY ?
Страница 13
... effect before its introduction beneath the hanging mass , and if , when beneath it , the effect on the balance could be MEASUREMENTS IN ELECTRICITY . 13.
... effect before its introduction beneath the hanging mass , and if , when beneath it , the effect on the balance could be MEASUREMENTS IN ELECTRICITY . 13.
Страница 14
John Trowbridge. beneath it , the effect on the balance could be neglected . It was found that a mass of 453 grammes of lead hung on one arm of a chemical balance by a wire , and attracted by a mass of 154 kilogrammes of lead , showed an ...
John Trowbridge. beneath it , the effect on the balance could be neglected . It was found that a mass of 453 grammes of lead hung on one arm of a chemical balance by a wire , and attracted by a mass of 154 kilogrammes of lead , showed an ...
Страница 15
... effect of gravita- tion in regulating , so to speak , the transformations of energy in our atmosphere . When water is heated , the warm water , being less dense and therefore having less * A dyne is the force which , acting upon a ...
... effect of gravita- tion in regulating , so to speak , the transformations of energy in our atmosphere . When water is heated , the warm water , being less dense and therefore having less * A dyne is the force which , acting upon a ...
Страница 16
... effect of gravitation . The following 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 ...
... effect of gravitation . The following 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 ...
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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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Страница 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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Страница 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.