What is Electricity?D. Appleton and Company, 1903 - 315 pagini |
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Pagina 37
... pass fixed points on the com- pass box . Lord Kelvin made a great improvement in the old form by fixing a number of very light steel magnets on a light disk , getting in this way strong mag- netism , so to speak , or magnetic moment ...
... pass fixed points on the com- pass box . Lord Kelvin made a great improvement in the old form by fixing a number of very light steel magnets on a light disk , getting in this way strong mag- netism , so to speak , or magnetic moment ...
Pagina 48
... pass into the ring through a suitable valve at one end of the diameter and out of the ring at the other . The whirling motion of such a moving ring would not sensibly affect the air or steam in the pipe . If a current of electricity ...
... pass into the ring through a suitable valve at one end of the diameter and out of the ring at the other . The whirling motion of such a moving ring would not sensibly affect the air or steam in the pipe . If a current of electricity ...
Pagina 73
John Trowbridge. This cules of the fluid . In this respect its behaviour in pass- ing through a fluid differs greatly from that which it manifests in a wire or metal conductor . No molecular effect has yet been observed in wires through ...
John Trowbridge. This cules of the fluid . In this respect its behaviour in pass- ing through a fluid differs greatly from that which it manifests in a wire or metal conductor . No molecular effect has yet been observed in wires through ...
Pagina 80
... pass through the blind . When this light emerges from such an arrange- ment of matter , therefore , it is said to be polarized , and it can be tested by another substance exactly similar to that which polarizes the ray ; for if the ...
... pass through the blind . When this light emerges from such an arrange- ment of matter , therefore , it is said to be polarized , and it can be tested by another substance exactly similar to that which polarizes the ray ; for if the ...
Pagina 99
... pass through the spool S in the same direction , and so that we shall thus have - if he commutes swiftly enough — a steady current through S instead of a to - and - fro or alternating current . It is evident that it would require very ...
... pass through the spool S in the same direction , and so that we shall thus have - if he commutes swiftly enough — a steady current through S instead of a to - and - fro or alternating current . It is evident that it would require very ...
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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.