A Century of ElectricityMacmillan, 1887 - 229 páginas |
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Página 18
... metal wire , when , to his surprise , he was unable to produce the slightest electrical effect at the distant end . He was at once led to believe that the " virtue " had leaked out through the metal , and that the smallness of the silk ...
... metal wire , when , to his surprise , he was unable to produce the slightest electrical effect at the distant end . He was at once led to believe that the " virtue " had leaked out through the metal , and that the smallness of the silk ...
Página 24
... these particulars : 1. Giving light . 2. Color of the light . 3. Crooked direction . 4. Swift motion . 5. Being conducted by metals . 6. Crack or noise in explod- ing . 7. Subsisting in water or ice . 8. 24 A CENTURY OF ELECTRICITY .
... these particulars : 1. Giving light . 2. Color of the light . 3. Crooked direction . 4. Swift motion . 5. Being conducted by metals . 6. Crack or noise in explod- ing . 7. Subsisting in water or ice . 8. 24 A CENTURY OF ELECTRICITY .
Página 25
... metals . 11. Firing inflammable substances . 12. Sulphureous smell . The electric fluid is attracted by points , we do not know whether this property is in lightning . But since they agree in all the par- ticulars wherein we can already ...
... metals . 11. Firing inflammable substances . 12. Sulphureous smell . The electric fluid is attracted by points , we do not know whether this property is in lightning . But since they agree in all the par- ticulars wherein we can already ...
Página 35
... metal acted only as conductors . Thus arose the term " Animal Electricity ; " and by many who doubted the identity of the new and the old the word " galvanism " was used , - a name which held its place so tenaciously that it has been ...
... metal acted only as conductors . Thus arose the term " Animal Electricity ; " and by many who doubted the identity of the new and the old the word " galvanism " was used , - a name which held its place so tenaciously that it has been ...
Página 36
... metals . He enunciated the general proposition , that , when- ever two different metals are placed in contact , one will become positively and the other nega- tively charged . This was the first statement of what is known as the ...
... metals . He enunciated the general proposition , that , when- ever two different metals are placed in contact , one will become positively and the other nega- tively charged . This was the first statement of what is known as the ...
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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.