What is Electricity?D. Appleton & Company, 1896 - 315 pagini |
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Pagina 15
... arrangement may be almost indefi- nitely increased . " In Prof. Poynting's experiments , taking 4 millimetres as the distance between the threads and supposing the bracket to be 600 millimetres below the knife edge of the balance , the ...
... arrangement may be almost indefi- nitely increased . " In Prof. Poynting's experiments , taking 4 millimetres as the distance between the threads and supposing the bracket to be 600 millimetres below the knife edge of the balance , the ...
Pagina 22
... arranged his apparatus as follows . Since he knew noth- ing about gravitation except its measure and the direc- tion in which it acted , he determined to apply the anal- ogies of the laws of the transformation of energy , to see if some ...
... arranged his apparatus as follows . Since he knew noth- ing about gravitation except its measure and the direc- tion in which it acted , he determined to apply the anal- ogies of the laws of the transformation of energy , to see if some ...
Pagina 38
... arrangement of iron filings around the poles of a magnet . The defenders of the theory of action at a dis- tance did not carefully examine the disturbance of a mag- netic field by the introduction of a magnetic pole , whereas in the ...
... arrangement of iron filings around the poles of a magnet . The defenders of the theory of action at a dis- tance did not carefully examine the disturbance of a mag- netic field by the introduction of a magnetic pole , whereas in the ...
Pagina 56
... arrangement , which is termed the multiple circuit . We can obtain a conception of a multiple circuit and its effect in diminishing resistance by considering the flow of water through pipes . If we narrow the diameter of a pipe we ...
... arrangement , which is termed the multiple circuit . We can obtain a conception of a multiple circuit and its effect in diminishing resistance by considering the flow of water through pipes . If we narrow the diameter of a pipe we ...
Pagina 76
... arrangement of molecules in a conducting fluid and produces an electric charge on the two metals of the battery ... arranged and an electric charge results . This charge does not result from any peculiar electricity of the body . It is ...
... arrangement of molecules in a conducting fluid and produces an electric charge on the two metals of the battery ... arranged and an electric charge results . This charge does not result from any peculiar electricity of the body . It is ...
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Termeni și expresii frecvente
action alternating current apparatus attraction body 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 flow 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 tricity tube velocity vibrations voltaic cell zinc
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Pagina 314 - SOUND : a Series of Simple, Entertaining, and Inexpensive Experiments in the Phenomena of Sound, for the use of Students of every age.
Pagina 296 - ... of our planet, so far as we know it; and nitrogen is very far the predominant constituent of our atmosphere. If the earth is a detached bit whirled off the mass of the sun, as cosmogonists love to tell us, how comes it that in leaving the sun we cleaned him out so completely of his nitrogen and oxygen that not a trace of these gases remains behind to be discovered even by the sensitive vision of the spectroscope...
Pagina 256 - 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...
Pagina 313 - Part I. MECHANICS, HYDROSTATICS, and PNEUMATICS. Part II. HEAT. Part III. ELECTRICITY and MAGNETISM. Part IV.
Pagina 118 - Faraday, in his mind's eye, saw lines of force traversing all space where the mathematicians saw centres of force attracting at a distance : Faraday saw a medium where they saw nothing but distance : Faraday sought the seat of the phenomena in real actions going on in the medium, they were satisfied that they had found it in a power of action at a distance impressed on the electric fluids.