What is Electricity?D. Appleton & Company, 1896 - 315 pagini |
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Pagina
John Trowbridge. CONTENTS . CHAPTER I. THE STANDPOINT OF PHYSICISTS II . - MEASUREMENTS IN ELECTRICITY PAGE 1 11 III . - MAGNETISM 25 · IV . THE ELECTRIC CURRENT 45 V. - FLOW OF ELECTRICITY IN THE EARTH 57 VI . THE VOLTAIC CELL 64 VII ...
John Trowbridge. CONTENTS . CHAPTER I. THE STANDPOINT OF PHYSICISTS II . - MEASUREMENTS IN ELECTRICITY PAGE 1 11 III . - MAGNETISM 25 · IV . THE ELECTRIC CURRENT 45 V. - FLOW OF ELECTRICITY IN THE EARTH 57 VI . THE VOLTAIC CELL 64 VII ...
Pagina 3
... measures do not agree with his hypotheses of vortical or atomic motions , he re- jects his attractive hypotheses ... measurement of the heat equiva- lent of the motion , is not satisfied by the hypotheses . It is not often that one finds ...
... measures do not agree with his hypotheses of vortical or atomic motions , he re- jects his attractive hypotheses ... measurement of the heat equiva- lent of the motion , is not satisfied by the hypotheses . It is not often that one finds ...
Pagina 4
... measurement in the great field of the transformations of energy they have been able to supply the world with the most exact , if not perfectly exact , information which it now possesses . Since the subject of this treatise is a popular ...
... measurement in the great field of the transformations of energy they have been able to supply the world with the most exact , if not perfectly exact , information which it now possesses . Since the subject of this treatise is a popular ...
Pagina 5
... measurements of heat produced by motion constitute our great touchstone in testing the truth of physical hypotheses . Tyndall's treatise on Heat a Mode of Motion was an epoch - making book in popular estimation . It certainly brought ...
... measurements of heat produced by motion constitute our great touchstone in testing the truth of physical hypotheses . Tyndall's treatise on Heat a Mode of Motion was an epoch - making book in popular estimation . It certainly brought ...
Pagina 6
... discuss the claims of priority ; to follow the protean forms under which energy manifests itself , rather than to measure the equivalence of these forms of energy . If we wish at this stage of our presentation of 6 WHAT IS ELECTRICITY ?
... discuss the claims of priority ; to follow the protean forms under which energy manifests itself , rather than to measure the equivalence of these forms of energy . If we wish at this stage of our presentation of 6 WHAT IS ELECTRICITY ?
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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.