A Century of ElectricityMacmillan, 1887 - 229 páginas |
Dentro del libro
Resultados 1-5 de 30
Página 28
Thomas Corwin Mendenhall. exhibiting marvellous skill and ingenuity , he showed that the force exerted was , as Newton had found the attraction of gravitation , inversely proportional to the square of the distance . The methods he ...
Thomas Corwin Mendenhall. exhibiting marvellous skill and ingenuity , he showed that the force exerted was , as Newton had found the attraction of gravitation , inversely proportional to the square of the distance . The methods he ...
Página 37
... force of the cell was affirmed to be in the chemical affinity existing between its elements . The advocates of this theory generally denied that any electrical sep- aration or disturbance of electric equilibrium took place on the ...
... force of the cell was affirmed to be in the chemical affinity existing between its elements . The advocates of this theory generally denied that any electrical sep- aration or disturbance of electric equilibrium took place on the ...
Página 51
... force is one of the two things upon which depends the action of an electric circuit . A Leyden jar , when charged , possesses electromotive force , the inside and the outside coating differing in " potential " by an amount generally ...
... force is one of the two things upon which depends the action of an electric circuit . A Leyden jar , when charged , possesses electromotive force , the inside and the outside coating differing in " potential " by an amount generally ...
Página 52
... force , as in the first instance ; but now the current is main- tained , and with constant strength , as long as the battery remains in its initial condition . Thus , by multiplying the number of cells , the electromotive force of the ...
... force , as in the first instance ; but now the current is main- tained , and with constant strength , as long as the battery remains in its initial condition . Thus , by multiplying the number of cells , the electromotive force of the ...
Página 53
... force , and its resistance . At present it will be necessary and sufficient to call atten- tion in a general way to the principles involved . The primary cause of the flow of the current is the electromotive force . If the two poles of ...
... force , and its resistance . At present it will be necessary and sufficient to call atten- tion in a general way to the principles involved . The primary cause of the flow of the current is the electromotive force . If the two poles of ...
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.