Spectroscope

Description
This is a direct-vision spectroscope with a seven-part prism. The three sections (collimator, prism train and telescope) screw together to form an instrument 18 inches long overall. The “John Browning / London” inscription refers to John Browning (ca. 1831-1925), the first important English spectroscope maker. The “Alex. R. Newman” inscription on the top of the mahogany box has not been identified. The “1173” incised on the inside of the box may be a serial number.
Browning introduced the seven prism form in 1869. A reliable text published in 1872 stated that this instrument “commends itself by the excellence of its performance, the facility of its use, the smallness of its dimension, the purity of colour, and its low price.”
Ref: John Browning, How to Work with the Spectroscope (London / New York, 1878).
H. Schellen, Spectrum Analysis in its Application to Terrestrial Substances, and the Physical Constitution of the Heavenly Bodies (London, 1872), p. 119.
Location
Currently not on view
Object Name
spectroscope
date made
1865-1900
maker
Browning, John
Measurements
overall: 18 in; 45.72 cm
place made
United Kingdom: England, London
ID Number
PH*327561
catalog number
327561
accession number
317962
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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