Object Details
- Central Scientific Company
- Description
- Direct vision spectroscope inscribed “WALLACE / SPECTROSCOPE / CENTRAL SCIENTIFIC CO. / CHICAGO.” Instead of a prism assembly, this instrument has a replica diffraction grating of the sort developed by Robert James Wallace (1868-1945), a photographer at the Yerkes Observatory in Williams Bay, Wisconsin.
- Ref: Robert J. Wallace, “Diffraction Grating Replicas,” Astrophysical Journal 22 (1905): 123-130, and 23 (1906): 96-99.
- Central Scientific Company, Physical and Chemical Apparatus (Chicago, 1909), p. 234.
- "DR. ROBERT J. WALLACE," New York Times (Dec. 13, 1945), p. 27.
- Location
- Currently not on view
- early 20th century
- ID Number
- PH.337125
- catalog number
- 337125
- accession number
- 1979.0026
- Object Name
- spectroscope
- Measurements
- overall: 4 in; 10.16 cm
- overall in housing: 3 11/16 in x 3 1/4 in x 6 7/16 in; 9.36625 cm x 8.255 cm x 16.35125 cm
- place made
- United States: Illinois, Chicago
- See more items in
- Medicine and Science: Physical Sciences
- Science & Mathematics
- Optics
- National Museum of American History
- Subject
- Science & Scientific Instruments
- Record ID
- nmah_1463303
- GUID (Link to Original Record)
- https://n2t.net/ark:/65665/ng49ca746ae-2207-704b-e053-15f76fa0b4fa
