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 289by Royal Society (Great Britain) - 1857Full view - About this book
| Physics - 1857 - 1142 pages
...to perform it with exactness, and to any stated degree (positive or negative) of strength. Complete plans of all details I have ready to describe when...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... | |
| Electricity - 1908 - 1016 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... | |
| Institution of Electrical Engineers - Electrical engineering - 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... | |
| 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... | |
| 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... | |
| Smithsonian Institution. Board of Regents - Discoveries in science - 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... | |
| Institution of Electrical Engineers - Electrical engineering - 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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