A Century of ElectricityMacmillan, 1887 - 229 páginas |
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Página 20
... of the experimenter . It is " charged " by con- necting either coating with the source of electricity , while the other is connected with the earth . As has so many times happened in the history of. 20 A CENTURY OF ELECTRICITY .
... of the experimenter . It is " charged " by con- necting either coating with the source of electricity , while the other is connected with the earth . As has so many times happened in the history of. 20 A CENTURY OF ELECTRICITY .
Página 25
... " Franklin's original plan for drawing electric- ity from the clouds was to place a man in a sort of sentry - box , insulating him by means of a cake of wax , and putting him in connection with EIGHTEENTH CENTURY . 25.
... " Franklin's original plan for drawing electric- ity from the clouds was to place a man in a sort of sentry - box , insulating him by means of a cake of wax , and putting him in connection with EIGHTEENTH CENTURY . 25.
Página 26
Thomas Corwin Mendenhall. cake of wax , and putting him in connection with an iron rod which extended many feet into the air . If the experiment succeeded , sparks might be drawn from the man . He did not appear to think that the person ...
Thomas Corwin Mendenhall. cake of wax , and putting him in connection with an iron rod which extended many feet into the air . If the experiment succeeded , sparks might be drawn from the man . He did not appear to think that the person ...
Página 33
... connection we do not wish to deny that Galvani might not , on one or more occasions , have had frogs in his hands with the amiable intention of himself preparing broth for his adored spouse . " Gal- vani's own account of the experiment ...
... connection we do not wish to deny that Galvani might not , on one or more occasions , have had frogs in his hands with the amiable intention of himself preparing broth for his adored spouse . " Gal- vani's own account of the experiment ...
Página 42
... 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 order copper , zinc , fluid ; copper , zinc ...
... 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 order copper , zinc , fluid ; copper , zinc ...
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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
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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.