What is Electricity?D. Appleton & Company, 1896 - 315 pagini |
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Pagina 6
... means for richly illus- trating it . The claims of the great founders of this hypothesis have been set forth by Tyndall in his treatise , and by Tait in his Recent Advances in Physical Science . My object in this treatise is to call ...
... means for richly illus- trating it . The claims of the great founders of this hypothesis have been set forth by Tyndall in his treatise , and by Tait in his Recent Advances in Physical Science . My object in this treatise is to call ...
Pagina 8
... means of this great invention of Watt we obtain our electrical currents ; and when it is said that electricity will some day supersede steam , we can assert with a similar show of reason that flying may some day take the place of ...
... means of this great invention of Watt we obtain our electrical currents ; and when it is said that electricity will some day supersede steam , we can assert with a similar show of reason that flying may some day take the place of ...
Pagina 9
... means of which Faraday and Joseph Henry detected the small indications of a force which the steam engine has exalted into a mighty one , we are reminded of the slight rub which Aladdin gave to the lamp which was sufficient to summon a ...
... means of which Faraday and Joseph Henry detected the small indications of a force which the steam engine has exalted into a mighty one , we are reminded of the slight rub which Aladdin gave to the lamp which was sufficient to summon a ...
Pagina 12
... means of the mechanical equivalent of heat , which states that the work done in raising one pound of water one degree in temperature on the Fahrenheit scale is equivalent to raising 772 pounds one foot high against the attraction of ...
... means of the mechanical equivalent of heat , which states that the work done in raising one pound of water one degree in temperature on the Fahrenheit scale is equivalent to raising 772 pounds one foot high against the attraction of ...
Pagina 13
... means of which we measure electricity , is perhaps the greatest mystery in the subject of physical science , and its mani- festation is so omnipresent , so silent and unsensational , that our mind rarely dwells upon its mysterious ...
... means of which we measure electricity , is perhaps the greatest mystery in the subject of physical science , and its mani- festation is so omnipresent , so silent and unsensational , that our mind rarely dwells upon its mysterious ...
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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.