What is Electricity?D. Appleton and Company, 1903 - 315 pagini |
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Pagina 11
... ordinary steam engine , for the trans- formations are more numerous and subtle . In the main , however , there is a close relation between the amount of food consumed and the work that a man can do . The most powerful instrument for ...
... ordinary steam engine , for the trans- formations are more numerous and subtle . In the main , however , there is a close relation between the amount of food consumed and the work that a man can do . The most powerful instrument for ...
Pagina 11
... after detailing his experiments on magnetic induction : " The various ex- periments of this section prove , I think , most completely the production of electricity from ordinary magnetism . That its THE STANDPOINT OF PHYSICISTS .
... after detailing his experiments on magnetic induction : " The various ex- periments of this section prove , I think , most completely the production of electricity from ordinary magnetism . That its THE STANDPOINT OF PHYSICISTS .
Pagina 11
John Trowbridge. the production of electricity from ordinary magnetism . That its intensity should be very feeble and quantity small can not be considered wonderful , when it is re- membered that , like thermoelectricity , it is evolved ...
John Trowbridge. the production of electricity from ordinary magnetism . That its intensity should be very feeble and quantity small can not be considered wonderful , when it is re- membered that , like thermoelectricity , it is evolved ...
Pagina 14
... ordinary balance which indi- cates the difference in weight in the balance pans would be too small to observe . To make these small movements perceptible and also measurable , a small arm or bracket , B , was fixed to the pointer of the ...
... ordinary balance which indi- cates the difference in weight in the balance pans would be too small to observe . To make these small movements perceptible and also measurable , a small arm or bracket , B , was fixed to the pointer of the ...
Pagina 16
... enough to fill all the Great Lakes . " The amount of mechanical work which the raising of this involves is enormous , and the ordinary concep- * Bulletin C , 1894 . tion of it is quite inadequate . Some idea of 16 WHAT IS ELECTRICITY ?
... enough to fill all the Great Lakes . " The amount of mechanical work which the raising of this involves is enormous , and the ordinary concep- * Bulletin C , 1894 . tion of it is quite inadequate . Some idea of 16 WHAT IS ELECTRICITY ?
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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.