Diffraction Grating

Description:

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. It is marked "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.

Ref: D. J. Warner, "Lewis M. Rutherfurd: Pioneer Astronomical Photographer and Spectroscopist," Technology and Culture 12 (1971): 190-216.

Date Made: 1877

Maker: Rutherfurd, Lewis Morris

Location: Currently not on view

Place Made: United States: New York

See more items in: Medicine and Science: Physical Sciences, Science & Mathematics

Exhibition:

Exhibition Location:

Credit Line: Princeton University

Data Source: National Museum of American History

Id Number: PH.328884Accession Number: 277637Catalog Number: 328884

Object Name: Diffraction Grating

Measurements: overall: 3 3/4 in x 4 3/4 in x 7/8 in; 9.525 cm x 12.065 cm x 2.2225 cmoverall: 3 3/4 in x 4 3/4 in x 7/8 in; 9.525 cm x 12.065 cm x 2.2225 cm

Guid: http://n2t.net/ark:/65665/ng49ca746aa-2fc3-704b-e053-15f76fa0b4fa

Record Id: nmah_1183943

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