What is Electricity?D. Appleton and Company, 1903 - 315 pagini |
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Pagina 10
... 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 Chautauquan , the Popular Sci- ence Monthly , the American Journal ...
... 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 Chautauquan , the Popular Sci- ence Monthly , the American Journal ...
Pagina 11
... manifestations . The Rumford professorship in Harvard University was endowed by Count Rumford in order to promote our knowledge of light and heat ; for many years the lectures given under the endowment were devoted ex- clusively to the ...
... manifestations . The Rumford professorship in Harvard University was endowed by Count Rumford in order to promote our knowledge of light and heat ; for many years the lectures given under the endowment were devoted ex- clusively to the ...
Pagina 11
... manifestations . It has been suggested , it is true , that the time of vibration of a hydrogen molecule at a definite tempera- ture and pressure would be an unalterable standard of time , and that the wave length in vacuum of sodium ...
... manifestations . It has been suggested , it is true , that the time of vibration of a hydrogen molecule at a definite tempera- ture and pressure would be an unalterable standard of time , and that the wave length in vacuum of sodium ...
Pagina 18
... manifestations of electricity . Does it also aid us in comprehending the forces of attraction which we perceive to be acting between magnets , and electrified pith balls ? -forces which are analogous in their mathematical expression to ...
... manifestations of electricity . Does it also aid us in comprehending the forces of attraction which we perceive to be acting between magnets , and electrified pith balls ? -forces which are analogous in their mathematical expression to ...
Pagina 23
... manifestations of one fundamental power , has made me often think upon the possibility of establishing by experiment a connection between gravity and electricity , and so by introducing the former into the group , the chain of which ...
... manifestations of one fundamental power , has made me often think upon the possibility of establishing by experiment a connection between gravity and electricity , and so by introducing the former into the group , the chain of which ...
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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.