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" Helmholtz's galvanometer, with or without modification. The time of vibration of the suspended magnet, and the efficiency of the copper damper, will be so arranged, that during the electric pulse the suspended magnet will turn from its position of equilibrium... "
Proceedings of the Royal Society of London - Page 289
by Royal Society (Great Britain) - 1857
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The London, Edinburgh and Dublin Philosophical Magazine and Journal of Science

1857 - 1142 pages
...electrified, will discharge into one another, as well as into the earth at their remote extremities ; each will be like a single wire of half-length, with...the alphabet written on the scale of which the image hi the suspended mirror is observed, and to arrange thirteen positive and thirteen negative strengths...
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Journal, Volume 41

1908 - 1026 pages
...copper damper to the suspended needle, the deflexions being observed by watching through a reading telescope the image of a scale reflected from the...side of the magnet or from a small mirror carried by it. As we all know, he abandoned this subjective method for the objective plan in which a spot of light...
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Proceedings of the Institution of Electrical Engineers, Volume 41

Institution of Electrical Engineers - 1908 - 958 pages
...copper damper to the suspended needle, the deflexions being observed by watching through a reading telescope the image of a scale reflected from the...side of the magnet or from a small mirror carried by it. As we all know, he abandoned this subjective method for the objective plan in which a spot of light...
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The Life of William Thomson, Baron Kelvin of Largs, Volume 1

Silvanus Phillips Thompson - 1910 - 640 pages
...position of maximum deflexion, and fall back to rest. Adopting the " subjective " method of observation, the observer will watch through a telescope the image...side of the magnet, or from a small mirror carried by it, " and will note the letter or number which each maximum deflexion brings into the middle of his...
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The Life of William Thomson, Baron Kelvin of Largs, Volume 1

Silvanus Phillips Thompson - 1910 - 646 pages
...position of maximum deflexion, and fall back to rest. Adopting the “subjective” method of observation, the observer will watch through a telescope the image...side of the magnet, or from a small mirror carried by it, “and will note the letter or number which each maximum deflexion brings into the middle of his...
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Annual Report of the Board of Regents of the Smithsonian Institution

Smithsonian Institution. Board of Regents - 1909 - 952 pages
...copper damper to the suspended needle, the deflections being observed by watching through a reading telescope the image of a scale reflected from the...side of the magnet or from a small mirror carried by it. As we all know, he abandoned this subjective method for the objective plan in which a spot of light...
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Proceedings of the Institution of Electrical Engineers, Volume 41

Institution of Electrical Engineers - 1908 - 1054 pages
...copper damper to the suspended needle, the deflexions being observed by watching through a reading telescope the image of a scale reflected from the...side of the magnet or from a small mirror carried by it. As we all know, he abandoned this subjective method for the objective plan in which a spot of light...
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