What is Electricity?D. Appleton & Company, 1896 - 315 pagini |
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Pagina 18
... medium by means of which the waves of light , heat , and electricity are conveyed to us from the sun . If we could also show that the force of gravitation results from the different rates of flow of this medium through the particles or ...
... medium by means of which the waves of light , heat , and electricity are conveyed to us from the sun . If we could also show that the force of gravitation results from the different rates of flow of this medium through the particles or ...
Pagina 19
John Trowbridge. tempt to show that the differential flow of a medium like the ether through empty space and through space filled with material particles is one of great difficulty from both the experimental and mathematical point of ...
John Trowbridge. tempt to show that the differential flow of a medium like the ether through empty space and through space filled with material particles is one of great difficulty from both the experimental and mathematical point of ...
Pagina 20
... medium and oppose the motion of the plants . The energy of the corpuscles would be enormous . rate at which it must be spent in order to maintain the gravitating property of a single pound is at least millions of millions of foot pounds ...
... medium and oppose the motion of the plants . The energy of the corpuscles would be enormous . rate at which it must be spent in order to maintain the gravitating property of a single pound is at least millions of millions of foot pounds ...
Pagina 32
... the action of magnetism on light ; then we perceive that there are not only attractive forces between molecules of the iron , but also rotary motions in the medium within and around the magnet , and in order 32 WHAT IS ELECTRICITY ?
... the action of magnetism on light ; then we perceive that there are not only attractive forces between molecules of the iron , but also rotary motions in the medium within and around the magnet , and in order 32 WHAT IS ELECTRICITY ?
Pagina 33
John Trowbridge. medium within and around the magnet , and in order to comprehend the phenomenon of magnetism we are com- pelled to assume a medium between the molecules and to attribute rotary or vortex movements to it . We shall return ...
John Trowbridge. medium within and around the magnet , and in order to comprehend the phenomenon of magnetism we are com- pelled to assume a medium between the molecules and to attribute rotary or vortex movements to it . We shall return ...
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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.