A Century of ElectricityMacmillan, 1887 - 229 páginas |
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Página 23
... ment of dues being remitted , the great Copley medal was bestowed upon him , and the Trans- actions of the Society were sent to him without expense during the remainder of his life . Franklin's contributions to the science of ...
... ment of dues being remitted , the great Copley medal was bestowed upon him , and the Trans- actions of the Society were sent to him without expense during the remainder of his life . Franklin's contributions to the science of ...
Página 26
... ment which he proposed is shown in the cut , which is an enlargement of that accompanying his original published. Method of drawing electricity from the clouds suggested by Franklin . Enlarged from cut accompanying his original paper ...
... ment which he proposed is shown in the cut , which is an enlargement of that accompanying his original published. Method of drawing electricity from the clouds suggested by Franklin . Enlarged from cut accompanying his original paper ...
Página 70
... and con- siderable improvements devised . The develop- ment of the science went along parallel with that of the science of electricity , as outlined in the first chapter , although the latter was more fruitful 70 A CENTURY OF ELECTRICITY .
... and con- siderable improvements devised . The develop- ment of the science went along parallel with that of the science of electricity , as outlined in the first chapter , although the latter was more fruitful 70 A CENTURY OF ELECTRICITY .
Página 73
... ius . His career was definitely fixed in the di- rection of experimental science , and during his years abroad he saw much of the rapid develop- ment of the science of electricity , which had just OERSTED'S DISCOVERY . 73.
... ius . His career was definitely fixed in the di- rection of experimental science , and during his years abroad he saw much of the rapid develop- ment of the science of electricity , which had just OERSTED'S DISCOVERY . 73.
Página 74
Thomas Corwin Mendenhall. ment of the science of electricity , which had just received so powerful an impetus through the discoveries of Galvani and Volta . On his return he was appointed professor of physics in the University of ...
Thomas Corwin Mendenhall. ment of the science of electricity , which had just received so powerful an impetus through the discoveries of Galvani and Volta . On his return he was appointed professor of physics in the University of ...
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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.