What is Electricity?D. Appleton and Company, 1903 - 315 pagini |
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Pagina 11
... possible relation between motion , light , heat , and electricity . The lectures which form the basis of Tyndall's treatise were delivered before the Royal In- stitution in 1862 , and in the index to the volume one finds no reference to ...
... possible relation between motion , light , heat , and electricity . The lectures which form the basis of Tyndall's treatise were delivered before the Royal In- stitution in 1862 , and in the index to the volume one finds no reference to ...
Pagina 45
... possible in electricity , for the electro - magnet , by means of which we transmit telegraph messages , propel cars , and , in short , accomplish most of the modern wonderful results in electricity , consists merely of a spool of cotton ...
... possible in electricity , for the electro - magnet , by means of which we transmit telegraph messages , propel cars , and , in short , accomplish most of the modern wonderful results in electricity , consists merely of a spool of cotton ...
Pagina 61
... possible to telegraph across the Atlantic Ocean without a cable . Powerful dynamo - electric ma- chines could be placed at some point in Nova Scotia , having one end of their circuit grounded in Florida , with an overhead wire between ...
... possible to telegraph across the Atlantic Ocean without a cable . Powerful dynamo - electric ma- chines could be placed at some point in Nova Scotia , having one end of their circuit grounded in Florida , with an overhead wire between ...
Pagina 62
John Trowbridge. in the article already referred to , it was possible to ad- just one's watch by connecting a telephone to the water pipes and gas pipes in almost any part of Boston and Cambridge , for one could hear the clicks of the ...
John Trowbridge. in the article already referred to , it was possible to ad- just one's watch by connecting a telephone to the water pipes and gas pipes in almost any part of Boston and Cambridge , for one could hear the clicks of the ...
Pagina 78
... been constructed with thermal junctions set in its walls , with the other set of junctions outside . It is possible , by having a large number of junctions in the pot of a furnace , to produce 78 WHAT IS ELECTRICITY ?
... been constructed with thermal junctions set in its walls , with the other set of junctions outside . It is possible , by having a large number of junctions in the pot of a furnace , to produce 78 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.