A Century of ElectricityMacmillan, 1887 - 229 páginas |
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Página 14
... effect in the human body was recognized , and it was thought that some individuals were capable of emitting electric sparks and flames . The possible value of electricity as a reme- dial agent was recognized in these early days , and ...
... effect in the human body was recognized , and it was thought that some individuals were capable of emitting electric sparks and flames . The possible value of electricity as a reme- dial agent was recognized in these early days , and ...
Página 18
... effect at the distant end . He was at once led to believe that the " virtue " had leaked out through the metal , and that the smallness of the silk was not the reason of its effectiveness . The division of bodies into conductors and non ...
... effect at the distant end . He was at once led to believe that the " virtue " had leaked out through the metal , and that the smallness of the silk was not the reason of its effectiveness . The division of bodies into conductors and non ...
Página 21
... effects entirely unknown before . Sir William Watson per- fected it by adding the outside metallic coating , and was by its aid enabled to fire gunpowder and other inflammables . In company with a number of Fellows of the Royal Society ...
... effects entirely unknown before . Sir William Watson per- fected it by adding the outside metallic coating , and was by its aid enabled to fire gunpowder and other inflammables . In company with a number of Fellows of the Royal Society ...
Página 27
... effects of electricity , which were afterwards to grow into such importance . He exploded mix- tures of oxygen and hydrogen by means of the electric spark , and , by varying the proportions , obtained such a combination that nothing but ...
... effects of electricity , which were afterwards to grow into such importance . He exploded mix- tures of oxygen and hydrogen by means of the electric spark , and , by varying the proportions , obtained such a combination that nothing but ...
Página 30
... effect of electricity on animals , and had gener- ally succeeded in killing his subject , appears to have had little ... effects . The golden age is , always was , and doubtless always will be , the present ; yet it would seem that ...
... effect of electricity on animals , and had gener- ally succeeded in killing his subject , appears to have had little ... effects . The golden age is , always was , and doubtless always will be , the present ; yet it would seem that ...
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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.