What is Electricity?D. Appleton & Company, 1896 - 315 pagini |
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Pagina 5
... 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 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.