What is Electricity?D. Appleton and Company, 1903 - 315 страници |
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Страница 9
... phenomena of electricity in such a manner that the reader can perceive the physicist's reasons for supposing that all space is filled with a me- dium which transmits electro - magnetic waves to us from the sun . In Tyndall's Heat as a ...
... phenomena of electricity in such a manner that the reader can perceive the physicist's reasons for supposing that all space is filled with a me- dium which transmits electro - magnetic waves to us from the sun . In Tyndall's Heat as a ...
Страница 10
... phenomena of light , heat as well as those of electricity , are manifestations of electrical energy . I have used in this treatise various popular lectures which I have delivered , and certain articles which I have published in the ...
... phenomena of light , heat as well as those of electricity , are manifestations of electrical energy . I have used in this treatise various popular lectures which I have delivered , and certain articles which I have published in the ...
Страница 26
... phenomena of Nature depend . . . . Men have been so electrized as to have considerable light round their heads and bodies , not un- like the light represented around the heads of saints by the painters . " The entire apparatus to ...
... phenomena of Nature depend . . . . Men have been so electrized as to have considerable light round their heads and bodies , not un- like the light represented around the heads of saints by the painters . " The entire apparatus to ...
Страница 27
... phenomena was extremely small . It was confined to the observation of the attrac- FIG . 2 . tion of magnets and of the phenomena of frictional electricity . America , however , in the year 1750 knew as much as Europe , and the physical ...
... phenomena was extremely small . It was confined to the observation of the attrac- FIG . 2 . tion of magnets and of the phenomena of frictional electricity . America , however , in the year 1750 knew as much as Europe , and the physical ...
Страница 31
... phenomena of electro - mag- netism it is well to consider the force of magnetism . In a letter to M. Dubourg , dated London , March 10 , 1773 , Franklin thus explains his views of mag- netism : " SIR : As to the magnetism which seems ...
... phenomena of electro - mag- netism it is well to consider the force of magnetism . In a letter to M. Dubourg , dated London , March 10 , 1773 , Franklin thus explains his views of mag- netism : " SIR : As to the magnetism which seems ...
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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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Страница 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.