Mechanical Equivalent of Heat Apparatus

Mechanical Equivalent of Heat Apparatus

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This mechanical equivalent of heat apparatus was touted as “a simplification of the apparatus used by Rowland in his classical experiments.” The inscription on the tag reads "The GAERTNER SCIENTIFIC CORPORATION CHICAGO, U.S.A. TRADE MARK REG. U.S. PAT. OFF." The motor is missing, as are the thermometers. This was used in the Physics Department at Beloit College.
William Gaertner began in business in Chicago in the late 1890s; the firm became The Gaertner Scientific Corporation in 1924.
Ref: The Gaertner Scientific Corporation, ”Scientia” Calorimeters and Accessories (Chicago, 1929), p. 9.
Currently not on view
Object Name
Mechanical Equivalent of Heat Apparatus
Gaertner Scientific Corporation
place made
United States: Illinois, Chicago
overall: 15 7/8 in x 15 13/16 in x 24 1/4 in; 40.3225 cm x 40.16375 cm x 61.595 cm
ID Number
catalog number
accession number
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Medicine and Science: Physical Sciences
Data Source
National Museum of American History
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