Cumming 1821 magnetic multiplier (replica)
date: label: Date made
content: 1962
name: label: maker
content: Smithsonian Institution
notes: label: Description (Brief)
content: Replica of a device made in 1821 by James Cumming (1771-1861, UK). A 8" x 4" base supports a 3-loop rectangular copper coil in the center of which is set a compass. Two brass mercury cups provide contacts for a battery. Reference: Chipman, Robert A. The earliest electromagnetic instruments. Bulletin of the United States National Museum. Contributions from the Museum of History and Technology 38, 123-135. Smithsonian Institution, 1964. https://repository.si.edu/bitstream/handle/10088/21310/USNMB-240_38_1964_472.pdf.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2001.3033.03
label: nonaccession number
content: 2001.3033
objectType: label: Object Name
content: Demonstration Device
label: Other Terms
content: Demonstration Device; Magnetic Devices
physicalDescription: label: Measurements
content: overall: 8 in x 4 in x 6 in; 20.32 cm x 10.16 cm x 15.24 cm