A Century of ElectricityMacmillan, 1887 - 229 páginas |
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Página 49
... consider its practical applica- tions ; and , indeed , the materials for the com- plete solution of the problem of lighting by electricity were not yet at hand . In the mean time improvements in the form and construction of the battery ...
... consider its practical applica- tions ; and , indeed , the materials for the com- plete solution of the problem of lighting by electricity were not yet at hand . In the mean time improvements in the form and construction of the battery ...
Página 58
... consider- able period of time , that the invention , about 1836 , by John Frederick Daniell , of the well- known battery which bears his name , must be re- garded as an epoch in the history of the progress of electricity . The Copley ...
... consider- able period of time , that the invention , about 1836 , by John Frederick Daniell , of the well- known battery which bears his name , must be re- garded as an epoch in the history of the progress of electricity . The Copley ...
Página 67
... consider- able as to challenge the admiration of those most skilled in modern methods of research . It has been claimed by Humboldt and others that the earliest known use of the magnetic needle was among the Chinese , in whose his- tory ...
... consider- able as to challenge the admiration of those most skilled in modern methods of research . It has been claimed by Humboldt and others that the earliest known use of the magnetic needle was among the Chinese , in whose his- tory ...
Página 77
... considering . In the beginning , students of electricity were not agreed as to their interpretation of Oersted's ... consider the action of the conducting wire upon the needle as in the nature of attrac- tion and repulsion , the two ...
... considering . In the beginning , students of electricity were not agreed as to their interpretation of Oersted's ... consider the action of the conducting wire upon the needle as in the nature of attrac- tion and repulsion , the two ...
Página 93
... consider- able surface . As it largely reduced the cost of construction , this discovery was of prime im- portance . It was really a repetition of what Franklin had long before accomplished when he stretched his wire across the ...
... consider- able surface . As it largely reduced the cost of construction , this discovery was of prime im- portance . It was really a repetition of what Franklin had long before accomplished when he stretched his wire across 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.