Spectroscope

Description
Taking his newly-invented to Mount Whitney in the summer of 1881, Samuel Pierpont Langley investigated what he termed the “lower infra-red spectrum” of the sun. Becoming Secretary of the Smithsonian Institution in 1887, Langley set about establishing an Astrophysical Observatory to further research in this area. This two-prism spectroscope was part of the early equipment of that organization. The “Cambridge Scientific Instrument Company” inscription refers to a firm that was established in 1881, and that became the Cambridge Scientific Instrument Company Ltd. in 1895.
Ref: Annals of the Astrophysical Observatory of the Smithsonian Institution 1 (1900): 32.
Location
Currently not on view
date made
1881-1895
maker
Cambridge Scientific Instrument Company
place made
United Kingdom: England, Cambridge
Measurements
overall: 12 in; 30.48 cm
overall: 11 1/2 in x 18 1/2 in x 19 1/4 in; 29.21 cm x 46.99 cm x 48.895 cm
ID Number
PH.314626
catalog number
314626
accession number
208046
Credit Line
Smithsonian Institution
subject
Science & Scientific Instruments
See more items in
Medicine and Science: Physical Sciences
Science & Mathematics
Optics
Data Source
National Museum of American History, Kenneth E. Behring Center

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