Arc Lamp
notes: label: Description
content: Hydrogen discharge arc lamp designed by Ralph Howard Munch (d. 1995), and apparently made in 1939. The glass tube, 11" long, contains a tungsten filament coated with alk. earth oxides. The transformer is missing. Munch was a physical chemist with a PhD from Northwestern University who would spend his career working for Monsanto in St. Louis.
label: Description
content: Ref: R. Munch, “A Gaseous Discharge Tube Especially Designed as an Intense Source of Continuous Ultraviolet Radiation,” Journal of the American Chemical Society 57 (1935): 1863-1865.
label: Description
content: “Ralph Munch; Retired Chemist With Monsanto,” St. Louis Post-Dispatch (Sept. 13, 1995), p. 48.
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Physical Sciences
creditLine: label: Credit Line
content: National Bureau of Standards
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.328874
label: catalog number
content: 328874
label: accession number
content: 278101
objectType: label: Object Name
content: Lamp, Arc
physicalDescription: label: Measurements
content: overall: 9 3/4 in x 16 7/8 in x 12 1/8 in; 24.765 cm x 42.8625 cm x 30.7975 cm