Diffraction Grating
date: label: date made
content: 1872
name: label: maker
content: Rutherfurd, Lewis Morris
notes: label: Description
content: This is one of the earliest gratings made by Lewis M. Rutherfurd, and one of three that the pioneer astrophysicist, Henry Draper, acquired in the fall of 1872. The glass plate measures 1⅜ inches square and is marked "Nov. 19, 1872, 6480 per inch L. 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
topic: label: Subject
content: Astronomy
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: John William Christopher Draper and James Christopher Draper
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.334273
label: accession number
content: 304826
label: catalog number
content: 334273
objectType: label: Object Name
content: Diffraction Grating
physicalDescription: label: Physical Description
content: glass (overall material)
label: Measurements
content: overall: 2 mm x 37.5 mm x 36 mm; 3/32 in x 1 15/32 in x 1 13/32 in
label: Measurements
content: overall; museum storage case: 2 1/4 in x 1 7/8 in x 2 1/4 in; 5.715 cm x 4.7625 cm x 5.715 cm