Electroscope
date: label: Date made
content: introduced ca. 1933
notes: label: Description
content: This instrument for measuring for gamma radiation was used by Herbert M. Clark, a professor of chemistry at the Rensselaer Polytechnic Institute. It was designed by Charles Christian Lauritsen (1892-1968), a Danish-American physicist on the faculty of the California Instrument of Technology, and his son, Thomas Lauritsen (1915-1973). A metal plate on the base reads "Quartz Fiber / Electroscope / Pat. No. 2022117/ Model 1 Ser. No. 753 / Fred C. Henson Co. / Pasadena, Calif., U.S.A."
label: Description
content: Ref: Charles C. Lauritsen, “Roentgen Meter,” U.S. Patent 2,022,117 (Nov. 26, 1935), assigned to the California Institute of Technology.
label: Location
content: Currently not on view
place: label: place made
content: United States: California, Pasadena
setName: label: See more items in
content: Medicine and Science: Modern Physics
creditLine: label: Credit Line
content: Rensselaer Polytechnic Institute. Department of Chemistry
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1994.0125.21.1
label: accession number
content: 1994.0125
label: catalog number
content: 1994.0125.21.1
objectType: label: Object Name
content: Electroscope, quartz-fiber, Lauritsen-type
physicalDescription: label: Measurements
content: overall: 9.6 cm x 24 cm; 3 3/4 in x 9 7/16 in