What is Electricity?D. Appleton & Company, 1896 - 315 pagini |
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... transmits electro - magnetic waves to us from the sun . In Tyndall's Heat as a Mode of Motion , Tait's Re- cent Advances in Physical Science , and Stewart's Con- servation of Energy , the relations between work done and heat produced ...
... transmits electro - magnetic waves to us from the sun . In Tyndall's Heat as a Mode of Motion , Tait's Re- cent Advances in Physical Science , and Stewart's Con- servation of Energy , the relations between work done and heat produced ...
Pagina 45
... transmit telegraph messages , propel cars , and , in short , accomplish most of the modern wonderful results in electricity , consists merely of a spool of cotton- or silk - covered wire placed upon an iron core . The rapid development ...
... transmit telegraph messages , propel cars , and , in short , accomplish most of the modern wonderful results in electricity , consists merely of a spool of cotton- or silk - covered wire placed upon an iron core . The rapid development ...
Pagina 46
... transmitting thousands of horse power is stopped ; it is incapable of passing through the insulating substance of the paper . Here we are brought to a realizing sense of one of the chief pecul- iarities of the method of transmitting ...
... transmitting thousands of horse power is stopped ; it is incapable of passing through the insulating substance of the paper . Here we are brought to a realizing sense of one of the chief pecul- iarities of the method of transmitting ...
Pagina 49
... transmitted . The same is true of a water pipe : the flow of water is greatly im- peded by the constriction of the pipe . In the case of steam and compressed air there is not a notable or great increase of heat when the bore of the ...
... transmitted . The same is true of a water pipe : the flow of water is greatly im- peded by the constriction of the pipe . In the case of steam and compressed air there is not a notable or great increase of heat when the bore of the ...
Pagina 52
... however , becomes very appreciable over long distances , and this resistance is one of the reasons why electrical power can not be per transmitted economically farther than five or six miles by a 52 WHAT IS ELECTRICITY ?
... however , becomes very appreciable over long distances , and this resistance is one of the reasons why electrical power can not be per transmitted economically farther than five or six miles by a 52 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.