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Description: | KTG.4. (Green and Lloyd catalogue number in white paint). 210 (Kelvin 1893 ? bequest number in red cellire). 40-0-40 ( in black on a white card half dial). .........rise at the following numbers ..........turns from the outer end ........580 994 1196 1268 2714 2739 4574 4599 6483 7045 7281 (written in indian ink on an incomplete paper label gummed to the silk insulation of the coil). MANU Unsigned. circa 1870 DES after JOULE,James,Prescott. 1842 Manchester, Lancashire, England DES after SCHWEIGGER,Johann,Salomo,Christoph. 1820 Halle, Germany. DES after CUMMING,James,Reverend. 1821 Trinity College, Cambridge, England. This is a potential tangent galvanometer in the millivolt range. The instrument consists of a small magnet on an aluminium pointer suspended at the centre of a coil of fine copper wire with 7281 turns and a resistance of 18,492 ohms. There is a small control magnet in the form of a portion of a disc magnet placed behind and below the moving magnet to form an astatic pair. | License: | http://www.hmag.gla.ac.uk/spirit/rights/ | Publisher: | Hunterian Museum and Art Gallery, University of Glasgow | Rights holder: | Hunterian Museum and Art Gallery, University of Glasgow | Subjects: | SCIENTIFIC COLLECTION : | Source: | Hunterian Museum | Creator: | Hunterian Museum and Art Gallery, University of Glasgow | Identifier: | http://www.huntsearch.gla.ac.uk/cgi-bin/... | Language: | en-GB | Go to resource |
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