A Century of ElectricityMacmillan, 1887 - 229 páginas |
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Página 41
... poles . When collected separately and examined , one proved to be hydrogen , and the other oxygen . Other experimenters substituted salts of copper and lead for the water , and found in each case that the pure metal was deposited at one ...
... poles . When collected separately and examined , one proved to be hydrogen , and the other oxygen . Other experimenters substituted salts of copper and lead for the water , and found in each case that the pure metal was deposited at one ...
Página 42
... pole , and the base to the negative . In this connection it is important to notice , that , in the earlier construction of the pile or battery , Volta's contact theory was strictly ex- emplified . In putting the plates together , the ...
... pole , and the base to the negative . In this connection it is important to notice , that , in the earlier construction of the pile or battery , Volta's contact theory was strictly ex- emplified . In putting the plates together , the ...
Página 43
... pole , and the copper end the positive . The same observation was made by Dr. Priestley , who at this time was experiment- ing in America . This explanation will account for an apparent error in Nicholson's description of his experiment ...
... pole , and the copper end the positive . The same observation was made by Dr. Priestley , who at this time was experiment- ing in America . This explanation will account for an apparent error in Nicholson's description of his experiment ...
Página 45
... pole of the battery , and touching it with a wire connected to the other . The gold- leaf was rapidly consumed , producing beauti- fully colored flames . By improvements in the form of the battery , and especially by increas- ing its ...
... pole of the battery , and touching it with a wire connected to the other . The gold- leaf was rapidly consumed , producing beauti- fully colored flames . By improvements in the form of the battery , and especially by increas- ing its ...
Página 49
... poles were similar to those of what was then known as " common " electricity . Experiment proved that the so - called " galvanism " was sim- ilar to this electricity in many other respects : it produced divergence in the leaves of a ...
... poles were similar to those of what was then known as " common " electricity . Experiment proved that the so - called " galvanism " was sim- ilar to this electricity in many other respects : it produced divergence in the leaves of a ...
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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
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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.