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 1.5 inches square overall, with the grating measuring 1⅛ inches square, and is marked "12960 to the inch Oct. 16, 1872 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
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.334272
label: accession number
content: 304826
label: catalog number
content: 334272
objectType: label: Object Name
content: Diffraction Grating
physicalDescription: label: Measurements
content: overall: 2 mm x 38 mm x 35 mm; 3/32 in x 1 1/2 in x 1 3/8 in
label: Measurements
content: overall; in museum storage: 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