A Century of ElectricityMacmillan, 1887 - 229 páginas |
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Página 16
... accompanying electrical excitation . These were afterwards independently discov- ered by Dr. Wall , an Englishman , who made the somewhat prophetic observation , " This light and crackling 16 A CENTURY OF ELECTRICITY .
... accompanying electrical excitation . These were afterwards independently discov- ered by Dr. Wall , an Englishman , who made the somewhat prophetic observation , " This light and crackling 16 A CENTURY OF ELECTRICITY .
Página 17
Thomas Corwin Mendenhall. the somewhat prophetic observation , " This light and crackling seems in some degree to represent thunder and lightning . " Sir Isaac Newton made a few experiments in electricity , which he exhibited to the ...
Thomas Corwin Mendenhall. the somewhat prophetic observation , " This light and crackling seems in some degree to represent thunder and lightning . " Sir Isaac Newton made a few experiments in electricity , which he exhibited to the ...
Página 19
... observations at first seemed to confirm the conclusion reached by Gray ; but he possessed the ingenuity to devise a crucial ... observation he anticipated Mr. Kinnersley , who was the friend and asso- ciate of Franklin ; but Kinnersley ...
... observations at first seemed to confirm the conclusion reached by Gray ; but he possessed the ingenuity to devise a crucial ... observation he anticipated Mr. Kinnersley , who was the friend and asso- ciate of Franklin ; but Kinnersley ...
Página 31
... observation so new and so novel that it at once set the elec- tricians upon a new track . It was the begin- ning of what may be called the New Electricity , and , as its development practically began with the new century , its ...
... observation so new and so novel that it at once set the elec- tricians upon a new track . It was the begin- ning of what may be called the New Electricity , and , as its development practically began with the new century , its ...
Página 35
... observation of prime importance , and it is re- corded as having been made on the date men- tioned above . It did not become generally known , however , until about 1790 , when it im- mediately attracted the attention of students of ...
... observation of prime importance , and it is re- corded as having been made on the date men- tioned above . It did not become generally known , however , until about 1790 , when it im- mediately attracted the attention of students 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.