What is Electricity?D. Appleton and Company, 1903 - 315 pagini |
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Pagina 48
... ring like a top about a diameter , allowing steam at high pressure to 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 ...
... ring like a top about a diameter , allowing steam at high pressure to 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 ...
Pagina 76
... rings bells , decomposes liquids , and produces the mysterious magnetic effect in the neighbourhood of wires which we have noted . We have now good reasons for believing that when we stroke the fur of a cat the mechanical action breaks ...
... rings bells , decomposes liquids , and produces the mysterious magnetic effect in the neighbourhood of wires which we have noted . We have now good reasons for believing that when we stroke the fur of a cat the mechanical action breaks ...
Pagina 77
... ring of metal wire we can produce a current of electricity in the wire . Moreover , if we hold it over a lamp and heat it at one point we can also produce a current in it . In these cases also the current is produced by the change in ...
... ring of metal wire we can produce a current of electricity in the wire . Moreover , if we hold it over a lamp and heat it at one point we can also produce a current in it . In these cases also the current is produced by the change in ...
Pagina 103
... ring be- ing connected to segments of the commuta- tor , X , while the current is taken off by the brushes , bb ' , and is made to flow around the field magnets , S N FIG . 11B . N and S , so as to make north and south poles , as the ...
... ring be- ing connected to segments of the commuta- tor , X , while the current is taken off by the brushes , bb ' , and is made to flow around the field magnets , S N FIG . 11B . N and S , so as to make north and south poles , as the ...
Pagina 108
... ring , and bringing the north pole almost into contact with the south pole , the air gap between them being very small , hardly any lines of magnetic force extend into the space about the poles . They are ; concentrated in the air gap ...
... ring , and bringing the north pole almost into contact with the south pole , the air gap between them being very small , hardly any lines of magnetic force extend into the space about the poles . They are ; concentrated in the air gap ...
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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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