What is Electricity?D. Appleton and Company, 1903 - 315 pagini |
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Pagina 2
... SOUND IN ITS RELATION TO MUSIC . By Pro- fessor PIETRO BLASERNA , Royal University of Rome . With numerous Illustrations . $ 1.50 . 23. STUDIES IN SPECTRUM ANALYSIS . By J. NORMAN LOCKYER , F. R. S. With 7 Photographic Illustrations of ...
... SOUND IN ITS RELATION TO MUSIC . By Pro- fessor PIETRO BLASERNA , Royal University of Rome . With numerous Illustrations . $ 1.50 . 23. STUDIES IN SPECTRUM ANALYSIS . By J. NORMAN LOCKYER , F. R. S. With 7 Photographic Illustrations of ...
Pagina 3
... SOUNDS . By Professor G. H. VON MEYER , University of Zürich . With 47 Illustrations . $ 1.75 . 47. FALLACIES : A View of Logic from the Practical Side . By ALFRED SIDGWICK , B. A. , Oxon . $ 1.75 . 48. ORIGIN OF CULTIVATED PLANTS . By ...
... SOUNDS . By Professor G. H. VON MEYER , University of Zürich . With 47 Illustrations . $ 1.75 . 47. FALLACIES : A View of Logic from the Practical Side . By ALFRED SIDGWICK , B. A. , Oxon . $ 1.75 . 48. ORIGIN OF CULTIVATED PLANTS . By ...
Pagina 29
... sound , but I do not think it would be speaking philosophically to call sound a material substance . " In another letter to Prof. Pictet , dated Paris , May 4 , 1804 , he says , " I am persuaded that I shall live a suffi- ciently long ...
... sound , but I do not think it would be speaking philosophically to call sound a material substance . " In another letter to Prof. Pictet , dated Paris , May 4 , 1804 , he says , " I am persuaded that I shall live a suffi- ciently long ...
Pagina 47
... sound heard in a wire when an elec- tric current is suddenly established in it . One can handle the wire carrying thousands of horse power without experiencing the slightest sensation , and birds can sit on such a wire with the safety ...
... sound heard in a wire when an elec- tric current is suddenly established in it . One can handle the wire carrying thousands of horse power without experiencing the slightest sensation , and birds can sit on such a wire with the safety ...
Pagina 175
... sound travels about a thousand feet per second , that the discharge must have occurred a mile away . We should find , on making the necessary calcu- lation , that it would take some hundreds of horse power to produce this electrical ...
... sound travels about a thousand feet per second , that the discharge must have occurred a mile away . We should find , on making the necessary calcu- lation , that it would take some hundreds of horse power to produce this electrical ...
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Termeni și expresii frecvente
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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Pagina 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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Pagina 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.