A Century of ElectricityMacmillan, 1887 - 229 páginas |
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Página 7
... . MULTIPLEX TELEGRAPHY AND SUBMARINE CABLES . . 111 CHAPTER VI . FARADAY'S DISCOVERY OF INDUCTION AND THE DE- VELOPMENT OF THE DYNAMO CHAPTER VII . THE ELECTRIC LIGHT 151 183 CHAPTER VIII . THE TRANSMISSION OF ENERGY BY MEANS OF.
... . MULTIPLEX TELEGRAPHY AND SUBMARINE CABLES . . 111 CHAPTER VI . FARADAY'S DISCOVERY OF INDUCTION AND THE DE- VELOPMENT OF THE DYNAMO CHAPTER VII . THE ELECTRIC LIGHT 151 183 CHAPTER VIII . THE TRANSMISSION OF ENERGY BY MEANS OF.
Página 94
... cable . It depends , also , upon the sensitiveness of the receiving instrument , from which it will be un- derstood that what is here stated concerning velocities refers to the time required for the production of certain effects through ...
... cable . It depends , also , upon the sensitiveness of the receiving instrument , from which it will be un- derstood that what is here stated concerning velocities refers to the time required for the production of certain effects through ...
Página 98
... cables , and within a few years a self - recording device has been successfully ap- plied to it . The system of telegraphy now almost uni- versally in use is one which originated in Amer- ica , and whose development was nearly contem ...
... cables , and within a few years a self - recording device has been successfully ap- plied to it . The system of telegraphy now almost uni- versally in use is one which originated in Amer- ica , and whose development was nearly contem ...
Página 110
... original methods , which involve new principles or espe cially novel features , will be briefly considered in the following chapter . CHAPTER V. MULTIPLEX TELEGRAPHY AND SUBMARINE CABLES . THE rapid 110 A CENTURY OF ELECTRICITY .
... original methods , which involve new principles or espe cially novel features , will be briefly considered in the following chapter . CHAPTER V. MULTIPLEX TELEGRAPHY AND SUBMARINE CABLES . THE rapid 110 A CENTURY OF ELECTRICITY .
Página 111
... the uninitiated , the operation is still a mystery ; and this in spite of the fact that the principles involved are extremely simple . H As early as 1852 an American , Moses G. Farmer CHAPTER V MULTIPLEX TELEGRAPHY AND SUBMARINE CABLES.
... the uninitiated , the operation is still a mystery ; and this in spite of the fact that the principles involved are extremely simple . H As early as 1852 an American , Moses G. Farmer CHAPTER V MULTIPLEX TELEGRAPHY AND SUBMARINE CABLES.
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Términos y frases comunes
already Ampère appear armature arranged attracted battery beatification cable carbon cell century chemical circuit coil conductor connected consists construction copper core Crown 8vo current of electricity CYRUS W dash Davy deflect device devised direction discovery disk duced duplex dynamo dynamo-electric dynamo-electric machine effect elec electric current electric light electric telegraph electricians electrified electro-magnet electromotive force energy exhibited experiment experimental extremely fact Faraday Faraday's field flow Franklin Galvani galvanometer gutta-percha heat important increased induction insulated invention inventors known lamp latter Leyden jar lines of force machine magnetic needle means ment metals method Morse motion motor nearly number of lines Oersted's operation passed periment poles possible present principle produced rapid receiving instrument resistance rotation Royal Society science of electricity scientific signals siphon recorder stopcock successful sulphuric acid telegraph tion trans transmission transmitted tricity vibration wheel wire zinc
Pasajes populares
Página 46 - ... of an inch), a bright spark was produced, and more than half the volume of the charcoal became ignited to whiteness, and by withdrawing the points from each other a constant discharge took place through the heated air, in a space equal at least to four inches, producing a most brilliant ascending arch of light, broad and conical in form in the middle.
Página 22 - I never was before engaged in any study that so totally engrossed my attention and my time, as this has lately done ; for what with making experiments when I can be alone, and repeating them to my friends and acquaintance, who, from the novelty of the thing, come continually in crowds to see them, I have, during some months past, had little leisure for any thing else.
Página 47 - ... producing a most beautiful coruscation of purple light, the charcoal became intensely ignited, and some platina wire attached to it, fused with brilliant scintillations, and fell in large globules upon the plate of the pump. All the phenomena of chemical decomposition were produced with intense rapidity by this combination.
Página 25 - The electric fluid is attracted by points. We do not know whether this property is in lightning, but since they agree in all the particulars in which we can already compare them, is it not probable they agree likewise in this? Let the experiment be made.