Christiansen Filters
notes: label: Description
content: A Christiansen filter produces an extremely narrow bandwidth beam of light. The form originated with the Danish physicist, Christian Christiansen (1843-1917). This set of filters, and jars containing material for making these filters, came from the Department of Physics of Columbia University. A paper label on the wooden box reads "From Prof. Farwell / May, 1949." Hermon W. Farwell (1880-1978) taught physics at Columbia, and retired in 1949.
label: Description
content: Ref: “Hermon Farwell, Physicist Specializing in Optics,” New York Times (June 6, 1978), p. D17.
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Physical Sciences
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2001.0162.17
label: catalog number
content: 2001.0162.17
label: accession number
content: 2001.0162
objectType: label: Object Name
content: filters, Christiansen
physicalDescription: label: Measurements
content: overall in case: 5 5/8 in x 12 3/4 in x 5 3/8 in; 14.2875 cm x 32.385 cm x 13.6525 cm