File:A_moving_coil_galvanometer._Wellcome_M0016397.jpg
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Summary
A moving coil galvanometer. | |||
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Title |
A moving coil galvanometer. |
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Description |
English: An early D'Arsonval galvanometer, which became the design used in modern moving coil ammeters. It consists of a small coil of fine wire suspended between the poles of a horseshoe magnet by a torsion fiber. When an electric current passes through the coil it turns to be parallel with the field, twisting the fiber, moving the pointer up the scale. When the torque of the coil balances the torque of the fiber, the pointer stops. From Hooke's law, the torque of the fiber is proportional to the angle of twist, so the angle of the pointer is proportional to the current. .
Wellcome Images |
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Credit line |
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References |
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Source/Photographer |
https://wellcomeimages.org/indexplus/obf_images/30/af/06570418c9a34ae5c68c689cd90a.jpg
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current | 23:28, 24 October 2014 | 3,450 × 3,050 (2.02 MB) | Fæ | =={{int:filedesc}}== {{Artwork |artist = |author = |title = A moving coil galvanometer. |description = A moving coil galvanometer of the type designed by D'Arsonval. <p>Wellcome Images<br> Keywords: Electrici... |
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Short title | M0016397 A moving coil galvanometer. |
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Author | Wellcome Library, London |
Headline | M0016397 A moving coil galvanometer. |
Copyright holder | Copyrighted work available under Creative Commons Attribution only licence CC BY 4.0 http://creativecommons.org/licenses/by/4.0/ |
Image title | M0016397 A moving coil galvanometer.
Credit: Wellcome Library, London. Wellcome Images images@wellcome.ac.uk http://wellcomeimages.org A moving coil galvanometer of the type designed by D'Arsonval. Published: - Copyrighted work available under Creative Commons Attribution only licence CC BY 4.0 http://creativecommons.org/licenses/by/4.0/ |
IIM version | 2 |