A Century of ElectricityMacmillan, 1887 - 229 páginas |
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Página 12
... necessary to know something of the history of its various stages . A river is not best understood by an examination of its mouth alone , but rather by tracing its sources and its tributaries . So , in attempting to be- come acquainted ...
... necessary to know something of the history of its various stages . A river is not best understood by an examination of its mouth alone , but rather by tracing its sources and its tributaries . So , in attempting to be- come acquainted ...
Página 29
... necessary to success . One of these experiments , that attracted great attention for a time , was that known as the " beatification . " It con- sisted in an electrification of the human body such that " the man's head is surrounded by a ...
... necessary to success . One of these experiments , that attracted great attention for a time , was that known as the " beatification . " It con- sisted in an electrification of the human body such that " the man's head is surrounded by a ...
Página 30
Thomas Corwin Mendenhall. stories were rigidly investigated by Nollet , and it is hardly necessary to say that they were found to be entirely without foundation . Had Franklin's " electrified bumpers " been made use of , the ...
Thomas Corwin Mendenhall. stories were rigidly investigated by Nollet , and it is hardly necessary to say that they were found to be entirely without foundation . Had Franklin's " electrified bumpers " been made use of , the ...
Página 38
... , 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 electroscope as the legs of a frog to detect. 38 A CENTURY OF ELECTRICITY .
... , 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 electroscope as the legs of a frog to detect. 38 A CENTURY OF ELECTRICITY .
Página 48
... necessary to bring it to anything like perfection . Although the germ of success was in it , it does not appear that any special effort to develop it was made for a long time . So many problems of interest were constantly presenting ...
... necessary to bring it to anything like perfection . Although the germ of success was in it , it does not appear that any special effort to develop it was made for a long time . So many problems of interest were constantly presenting ...
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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.