A Century of ElectricityMacmillan, 1887 - 229 páginas |
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Página 32
... given weight to the pleasant story in which it is related that the wife of the philoso- pher , being in a declining state of health , " em- ployed as a restorative , according to the custom of the country , a soup made of frogs . " The ...
... given weight to the pleasant story in which it is related that the wife of the philoso- pher , being in a declining state of health , " em- ployed as a restorative , according to the custom of the country , a soup made of frogs . " The ...
Página 49
... given to it by Volta , consisting of a sin- gle liquid or mixture of liquids in which two metals were immersed , it possessed certain grave faults which rendered its use extremely incon- venient . In order to understand the nature of ...
... given to it by Volta , consisting of a sin- gle liquid or mixture of liquids in which two metals were immersed , it possessed certain grave faults which rendered its use extremely incon- venient . In order to understand the nature of ...
Página 53
... given of the discovery of the beautiful and sim- ple law which expresses the exact relation be- tween the current strength in a circuit , its elec- tromotive force , and its resistance . At present it will be necessary and sufficient to ...
... given of the discovery of the beautiful and sim- ple law which expresses the exact relation be- tween the current strength in a circuit , its elec- tromotive force , and its resistance . At present it will be necessary and sufficient to ...
Página 57
... has been given during the past few years . A similar condition of things exists in the simple cell described . The presence of the hydrogen at the copper plate produces polariza- tion ; that THE BATTERY AND THE CURRENT . 57.
... has been given during the past few years . A similar condition of things exists in the simple cell described . The presence of the hydrogen at the copper plate produces polariza- tion ; that THE BATTERY AND THE CURRENT . 57.
Página 78
... given much thought to the subject of electricity , and had repeated for himself all experiments of moment which had been devised by others . In the latter part of the year 1821 he succeeded where Wollaston had failed ; not , indeed , in ...
... given much thought to the subject of electricity , and had repeated for himself all experiments of moment which had been devised by others . In the latter part of the year 1821 he succeeded where Wollaston had failed ; not , indeed , in ...
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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
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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.