A Century of ElectricityMacmillan, 1887 - 229 páginas |
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Página 17
... attention from his other studies , although he made electricity the subject of several of his famous " Queries . " Francis Hawksbee was an active and useful contributor to experimental investigation , and he also called attention to the ...
... attention from his other studies , although he made electricity the subject of several of his famous " Queries . " Francis Hawksbee was an active and useful contributor to experimental investigation , and he also called attention to the ...
Página 22
... attention and my time , for what with mak- ing experiments when I can be alone , and re- peating them to my friends and acquaintance , who , from the novelty of the thing , come con- tinually in crowds to see them , I have , during some ...
... attention and my time , for what with mak- ing experiments when I can be alone , and re- peating them to my friends and acquaintance , who , from the novelty of the thing , come con- tinually in crowds to see them , I have , during some ...
Página 25
... attention . It is not generally known that his suggested experiment of draw- ing electricity from the clouds was not first tried by himself , but by Monsieur D'Alibard at Marly on May 10 , 1752. A few days later it was successfully ...
... attention . It is not generally known that his suggested experiment of draw- ing electricity from the clouds was not first tried by himself , but by Monsieur D'Alibard at Marly on May 10 , 1752. A few days later it was successfully ...
Página 29
... 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 glory , such a one in some measure as is repre- sented by painters in ...
... 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 glory , such a one in some measure as is repre- sented by painters in ...
Página 34
... attention to its influence upon the frog , which , owing to its extreme sensitiveness to electric disturbances , was well calculated to be the means of leading him to the discovery which has forever fixed his name in the nomenclature of ...
... attention to its influence upon the frog , which , owing to its extreme sensitiveness to electric disturbances , was well calculated to be the means of leading him to the discovery which has forever fixed his name in the nomenclature 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.