What is Electricity?D. Appleton and Company, 1903 - 315 pagini |
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Pagina 9
... 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 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 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 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.