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Description: | E 57 (old departmental catalogue number in red Cellire), also L.C.E.107. (old departmental catalogue number in aluminium paint). 95. (Kelvin bequest number in red cellire). There are other markings in red cellire no longer legible. MANU J. White. before 1884 Glasgow, Scotland. DES THOMSON,William,Lord,1st Baron Kelvin of Largs. 1859 Glasgow, Scotland DES after SCHWEIGGER,Johann,Salomo,Christoph. 1820 Halle, Germany. DES after POGGENDORFF,Johann,Christian. 1826 Germany. This is one of Kelvin's original "Marine" or "Ironclad" galvanometers developed from the "Cable" galvanometer. It was also known as a station galvanometer. It is basically a moving magnrt mirror galvanometer designed for use in telegraphy and patterns intended for use at sea had multiple silk strand supports for the needle. It is enclosed in iron to shield it from the Earth's and ship's magnetic fields. It should be noted that this type of galvanometer was sensitive to two times ten to the power of minus eleven volts of potential difference. This instrument must not be confused with the later pattern of "Marine" or "Recorder pattern" galvanometer which was a D'Arsonval moving coil type. This instrument does not appear to have been magnetically compensated. | 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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