What is Electricity?D. Appleton and Company, 1903 - 315 страници |
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Страница 9
... produced have been treated in a popular man- ner ; but I am not acquainted with any treatise in which Maxwell's great generalization , entitled the Electro- Magnetic Theory of Light , has been made the basis of Y MEM AOKK a popular ...
... produced have been treated in a popular man- ner ; but I am not acquainted with any treatise in which Maxwell's great generalization , entitled the Electro- Magnetic Theory of Light , has been made the basis of Y MEM AOKK a popular ...
Страница 11
... produced by motion constitute our great touchstone in testing the truth of physical hypotheses . Tyndall's treatise ... produce heat in a class as modes we must recognise that it presented certain as- pects of the law of conservation of ...
... produced by motion constitute our great touchstone in testing the truth of physical hypotheses . Tyndall's treatise ... produce heat in a class as modes we must recognise that it presented certain as- pects of the law of conservation of ...
Страница 11
... produced , and the modern developments of electricity afford 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 ...
... produced , and the modern developments of electricity afford 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 ...
Страница 11
... produces the current . The doctrine of the conservation of energy is little more than a hundred years old . Count Rumford made his celebrated measurement of the heat produced by the boring of a cannon in 1789. Yet in this time the world ...
... produces the current . The doctrine of the conservation of energy is little more than a hundred years old . Count Rumford made his celebrated measurement of the heat produced by the boring of a cannon in 1789. Yet in this time the world ...
Страница 11
... produces electricity , and it is the most economical agent for producing it . It is interesting to reflect that steam is produced by the combustion of a past vegetation . The great tree ferns of the carboniferous age required for their ...
... produces electricity , and it is the most economical agent for producing it . It is interesting to reflect that steam is produced by the combustion of a past vegetation . The great tree ferns of the carboniferous age required for their ...
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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.