- The “No. 14 Thomson's Patent” inscription on this electrometer refers to William Thomson (1824-1907), the renowned mathematical physicist who invented the quadrant electrometer in 1853 and introduced several improvements over the course of the next seventeen years. This example is of the form unveiled in 1870. Since it was found in the Smithsonian “Castle,” we assume it was acquired by Joseph Henry, the physicist who served as the founding Secretary of the Institution.
- Ref: William Thomson, “Report of Electrometers and Electrostatic Measurements,” in Papers on Electrostatics and Magnetism (London, 1872), pp. 260-309.
- Matthew Trainer, “The Patents of William Thomson (Lord Kelvin),” World Patent Information 26 (2004): 311-317.
- George Green and John T. Lloyd, Kelvin’s Instruments and the Kelvin Museum (Glasgow, 1970).
- Currently not on view
- Object Name
- patented by
- patented in
- United Kingdom: Scotland, Glasgow City
- overall: 5 in x 3 in; 12.7 cm x 7.62 cm
- overall: 4 7/8 in x 3 5/8 in; 12.3825 cm x 9.2075 cm
- ID Number
- catalog number
- accession number
- See more items in
- Medicine and Science: Chemistry
- Data Source
- National Museum of American History
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