A Century of ElectricityMacmillan, 1887 - 229 páginas |
Dentro del libro
Resultados 1-5 de 19
Página 16
... exhibited in at- tracting light bodies , borrowing the name from the substance itself , in order to define one of its attributes . He constructed a real electroscope , consisting of a light needle resting on a point , and by its use ...
... exhibited in at- tracting light bodies , borrowing the name from the substance itself , in order to define one of its attributes . He constructed a real electroscope , consisting of a light needle resting on a point , and by its use ...
Página 17
... exhibited to the Royal Society . He did not , however , allow his interest in them to divert his attention from his other studies , although he made electricity the subject of several of his famous " Queries . " Francis Hawksbee was an ...
... exhibited to the Royal Society . He did not , however , allow his interest in them to divert his attention from his other studies , although he made electricity the subject of several of his famous " Queries . " Francis Hawksbee was an ...
Página 18
... exhibiting electrical phenomena . Some of Gray's papers fell into the hands of Dufay , an officer of the French army , who , after several years ' service , had resigned his post to devote himself to scientific pursuits . He repeated ...
... exhibiting electrical phenomena . Some of Gray's papers fell into the hands of Dufay , an officer of the French army , who , after several years ' service , had resigned his post to devote himself to scientific pursuits . He repeated ...
Página 19
... exhibited no differences , and afterward proved that such va- riations as had appeared were to be attributed to the coloring - matter employed in the process of manufacture . His most important discovery was the existence of two ...
... exhibited no differences , and afterward proved that such va- riations as had appeared were to be attributed to the coloring - matter employed in the process of manufacture . His most important discovery was the existence of two ...
Página 21
... exhibited and experimented with is that by which it has ever since been known . By its use , electricians were immediately able to work upon the mysterious " virtue " or " effluvia " in larger quantities , and to produce effects ...
... exhibited and experimented with is that by which it has ever since been known . By its use , electricians were immediately able to work upon the mysterious " virtue " or " effluvia " in larger quantities , and to produce effects ...
Otras ediciones - Ver todas
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
Pasajes populares
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.