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Description: | L.C.E.22. (old deparmental catalogue number in white paint). 9 (old departmental number in white cellire). MANU unknown circa 1835 DES after FARADAY,Michael. circa 1825 The Royal Institution, Albermarle Street, London, England. Otherwise known as Faraday's philosophical electric motor this instrumen was initially used to demonstrate the turning motion of an electric current passing through a metal rod. It consists of two donut shaped pools which were filled with mercury. The connections from an electric cell or battery were made by dipping wires, from the terminals of a cell, into the small cups which also held mercury. A vertically mounted iron rod, presumably magnetic, was held between the upper, adjustable, and lower, fixed, bearings. This rotator was so shaped that two hook like appendages, positioned one above the other and facing 180 degrees apart, dipped into each of the donut shaped pools of mercury. When an electric current was passed through the rotator, via the mercury pools, the rod rotated around its vertical axis. Presumably the motion was produced by eddy currents induced in the rotor as in Sturgeon's wheel. | 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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