- 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. The accompanying wooded box is marked "From Prof. Farwell / May, 1949." Hermon W. Farwell taught physics at Columbia in the early twentieth century.
- Currently not on view
- Object Name
- filters, Christiansen
- 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
- ID Number
- catalog number
- accession number
- See more items in
- Medicine and Science: Physical Sciences
- Data Source
- National Museum of American History
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