A Century of ElectricityMacmillan, 1887 - 229 páginas |
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Página 16
... consisting of a light needle resting on a point , and by its use discovered that the power of attracting light bodies did not belong to amber alone , but that it was possessed by many other substances when they were properly excited ...
... consisting of a light needle resting on a point , and by its use discovered that the power of attracting light bodies did not belong to amber alone , but that it was possessed by many other substances when they were properly excited ...
Página 20
... consists of a glass jar ( one having a wide mouth is most conveniently prepared ) , coated with tinfoil , within and without , to within a few inches of the top . The mouth is generally closed by a disk of dry wood , through which ...
... consists of a glass jar ( one having a wide mouth is most conveniently prepared ) , coated with tinfoil , within and without , to within a few inches of the top . The mouth is generally closed by a disk of dry wood , through which ...
Página 38
... consisting of silver coins and pieces of zinc , and moistened paper , were used , and , when put together , the pile was formed as shown in the figure . When this was done , he found it no longer necessary to use so sensitive an ...
... consisting of silver coins and pieces of zinc , and moistened paper , were used , and , when put together , the pile was formed as shown in the figure . When this was done , he found it no longer necessary to use so sensitive an ...
Página 49
... 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 these faults , as well as ...
... 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 these faults , as well as ...
Página 58
... consists in the use of two liquids , suitably chosen , and their separation by means of a porous jar or dia- phragm , which , being moist , does not offer in- jurious resistance to the passage of the current . Daniell's battery , the ...
... consists in the use of two liquids , suitably chosen , and their separation by means of a porous jar or dia- phragm , which , being moist , does not offer in- jurious resistance to the passage of the current . Daniell's battery , the ...
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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.