A Century of ElectricityMacmillan, 1887 - 229 páginas |
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Página 19
... appear of different colors by throwing different parts of a prismatic spectrum upon them . He found that they then exhibited no differences , and afterward proved that such va- riations as had appeared were to be attributed to the ...
... appear of different colors by throwing different parts of a prismatic spectrum upon them . He found that they then exhibited no differences , and afterward proved that such va- riations as had appeared were to be attributed to the ...
Página 23
... appears a fair and favorable account of Frank- lin's experiments up to that time , prepared by Sir William Watson . In the way of making the amende honorable , this account concludes as follows : On the whole , Mr. Franklin appears in ...
... appears a fair and favorable account of Frank- lin's experiments up to that time , prepared by Sir William Watson . In the way of making the amende honorable , this account concludes as follows : On the whole , Mr. Franklin appears in ...
Página 26
... appear to think that the person thus experi- mented upon might possibly be in danger ; but , suspecting that some might be apprehended , he afterward suggested slight modifications in the experiment , to secure his safety . The arrange ...
... appear to think that the person thus experi- mented upon might possibly be in danger ; but , suspecting that some might be apprehended , he afterward suggested slight modifications in the experiment , to secure his safety . The arrange ...
Página 30
... appears to have had little faith in its medicinal use . speaks of its having been imagined in America that deafness could be relieved by its use , and , concerning a proposal to apply it to the eyes " to restore dimness of sight , " he ...
... appears to have had little faith in its medicinal use . speaks of its having been imagined in America that deafness could be relieved by its use , and , concerning a proposal to apply it to the eyes " to restore dimness of sight , " he ...
Página 34
... appears to be tolerably well established that Galvani was long engaged in the investigation of the effect of electricity upon the muscles of animals , and that he gave especial attention to its influence upon the frog , which , owing to ...
... appears to be tolerably well established that Galvani was long engaged in the investigation of the effect of electricity upon the muscles of animals , and that he gave especial attention to its influence upon the frog , which , owing to ...
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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.