Diffraction Grating
date: label: date made
content: 1877
name: label: maker
content: Rutherfurd, Lewis Morris
notes: label: Description
content: Charles A. Young, professor of astronomy at the College of New Jersey (later Princeton University), acquired this diffraction grating in 1877. The speculum metal plate measures 2⅞ inches square, with the grating measuring almost 12 inches square. An inscription reads "Aug. 24, 1877; 5,760 per inch; 11,280 spaces, D. C. Chapman; 175, 2 Ave. N. Y." Daniel C. Chapman was the mechanic who operated the ruling engine designed and built by Lewis M. Rutherfurd.
label: Description
content: Ref: D. J. Warner, "Lewis M. Rutherfurd: Pioneer Astronomical Photographer and Spectroscopist," <i>Technology and Culture</i> 12 (1971): 190-216.
label: Location
content: Currently not on view
place: label: place made
content: United States: New York
setName: label: See more items in
content: Medicine and Science: Physical Sciences
label: See more items in
content: Science & Mathematics
creditLine: label: Credit Line
content: Princeton University
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.328884
label: accession number
content: 277637
label: catalog number
content: 328884
objectType: label: Object Name
content: Diffraction Grating
physicalDescription: label: Measurements
content: overall: 3 3/4 in x 4 3/4 in x 7/8 in; 9.525 cm x 12.065 cm x 2.2225 cm
label: Measurements
content: overall: 3 3/4 in x 4 3/4 in x 7/8 in; 9.525 cm x 12.065 cm x 2.2225 cm