What is Electricity?D. Appleton and Company, 1903 - 315 страници |
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Страница 9
... Motion , Tait's Re- cent Advances in Physical Science , and Stewart's Con- servation of Energy , the relations between work done and heat produced have been treated in a popular man- ner ; but I am not acquainted with any treatise in ...
... Motion , Tait's Re- cent Advances in Physical Science , and Stewart's Con- servation of Energy , the relations between work done and heat produced have been treated in a popular man- ner ; but I am not acquainted with any treatise in ...
Страница 11
... MOTION XVIII . - ELECTRIC WAVES . • XIX . THE ELECTRO - MAGNETIC THEORY OF LIGHT AND THE ETHER · XX . THE X RAYS XXI . - THE SUN XXII . - WHAT IS ELECTRICITY ? • • • 264 • 287 • · 298 · 305 WHAT IS ELECTRICITY ? 537 34 CHAPTER I. THE ...
... MOTION XVIII . - ELECTRIC WAVES . • XIX . THE ELECTRO - MAGNETIC THEORY OF LIGHT AND THE ETHER · XX . THE X RAYS XXI . - THE SUN XXII . - WHAT IS ELECTRICITY ? • • • 264 • 287 • · 298 · 305 WHAT IS ELECTRICITY ? 537 34 CHAPTER I. THE ...
Страница 11
... motions far more subtle than entered the imagination of Aristotle or Democritus . The natural philosopher of to - day ... motion , is not satisfied by the hypotheses . It is not often that one finds an intelligent appreci- ation of this ...
... motions far more subtle than entered the imagination of Aristotle or Democritus . The natural philosopher of to - day ... motion , is not satisfied by the hypotheses . It is not often that one finds an intelligent appreci- ation of this ...
Страница 11
... motion has its equivalent in heat . The treatise was called Heat con- sidered as a Mode of Motion . However much we may be inclined to criticise the title - for we can not prop- erly class the motions which produce heat in a class as ...
... motion has its equivalent in heat . The treatise was called Heat con- sidered as a Mode of Motion . However much we may be inclined to criticise the title - for we can not prop- erly class the motions which produce heat in a class as ...
Страница 11
... Motion , has happily illustrated the great doc- trine of the conservation of energy . No truth is better established in physics than that of the equivalence be- tween work and the heat produced , and the modern developments of ...
... Motion , has happily illustrated the great doc- trine of the conservation of energy . No truth is better established in physics than that of the equivalence be- tween work and the heat produced , and the modern developments of ...
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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 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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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.