- The radiometer was invented by the English chemist, William Crookes, and brought to public attention in 1875. James J. Hicks, a London instrument maker, made radiometers to Crookes’ specifications. Joseph Henry, the physicist who served as founding Secretary of the Smithsonian, saw Hicks’ display at the Centennial Exhibition held in Philadelphia in 1876, and ordered a full set of radiometers for the Institution. This is one of those instruments. The inscription on the glass reads "Crookes' Radiometer / Patented 12 Sept. 1876 / J. Hicks / Sole Maker / London."
- Currently not on view
- Object Name
- date made
- Hicks, J. J.
- place made
- United Kingdom: England, London, City of London
- overall: 8 1/4 in x 3 in; 20.955 cm x 7.62 cm
- ID Number
- catalog number
- accession number
- Credit Line
- Gift of Mary A. Henry
- See more items in
- Medicine and Science: Physical Sciences
- Data Source
- National Museum of American History
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