What is Electricity?D. Appleton and Company, 1903 - 315 pagini |
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Pagina 11
... 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 11
... 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 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.