What is Electricity?D. Appleton & Company, 1896 - 315 pagini |
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Pagina 5
... called Heat con- sidered as a Mode of Motion . However much we may be inclined to criticise the title - for we can not prop- erly class the motions which produce heat in a class as modes we must recognise that it presented certain as ...
... called Heat con- sidered as a Mode of Motion . However much we may be inclined to criticise the title - for we can not prop- erly class the motions which produce heat in a class as modes we must recognise that it presented certain as ...
Pagina 9
... called the force of magnetic induction . It may be said that it laid perdu with the possibility of being called into action by any one who possessed a coil of wire and a magnet . The reason that it remained undiscovered so long was due ...
... called the force of magnetic induction . It may be said that it laid perdu with the possibility of being called into action by any one who possessed a coil of wire and a magnet . The reason that it remained undiscovered so long was due ...
Pagina 11
... called an absolute system of elec- trical measurements - absolute in the sense that every- thing is referred to acceleration of a body falling to the earth at a definite place through a certain space in 11 -MEASUREMENTS IN ELECTRICITY.
... called an absolute system of elec- trical measurements - absolute in the sense that every- thing is referred to acceleration of a body falling to the earth at a definite place through a certain space in 11 -MEASUREMENTS IN ELECTRICITY.
Pagina 16
... called convection currents in water or in our atmosphere . The force of gravitation tends to equalize the movements produced by heat . In the case of an ascending column of heated air in the atmosphere , it is evident that this air must ...
... called convection currents in water or in our atmosphere . The force of gravitation tends to equalize the movements produced by heat . In the case of an ascending column of heated air in the atmosphere , it is evident that this air must ...
Pagina 31
... called the magnetic fluid , which exists in all ferruginous bodies , equally attracted by all their parts , and equally diffused through their whole substance ; at least where the equilibrium is not disturbed by a power superior to the ...
... called the magnetic fluid , which exists in all ferruginous bodies , equally attracted by all their parts , and equally diffused through their whole substance ; at least where the equilibrium is not disturbed by a power superior to the ...
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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.