Spectroscope
date: label: date made
content: 1860s
name: label: maker
content: Duboscq, Jules
notes: label: Description
content: Jules Duboscq began making spectroscopes soon after Robert Bunsen and Gustav Kirchhoff announced their pioneering observations in this field, and by 1863 he was boasting of having supplied instruments of this sort to numerous chemical laboratories and cabinets of physics. In this example, which came from Columbia University, the medium arm holds the slit facing the light source, the short arm holds a linear scale, the long arm holds the viewing telescope, and the central platform holds the two prisms that dispersed light into a spectrum. The inscription reads “J. Duboscq / à Paris / No. 267.”
label: Description
content: Ref: J. Duboscq, <i>Catalogue Raisonés des Spectroscopes</i> (Paris, 1870), p. 7.
label: Description
content: Maison Jules Duboscq, <i>Historique & Catalogue de tous les Instruments d’Optique Supérieure Appliqués aux Sciences et à l’Industrie</i> (Paris, 1885), p. 53.
label: Description
content: Charles A. Joy, “Examination of American Blendes for THALLIUM,” Annals of the Lyceum of Natural History 8 (1867): 247-250.
label: Location
content: Currently not on view
place: label: place made
content: France: Île-de-France, Paris
topic: label: Subject
content: Science & Scientific Instruments
setName: label: See more items in
content: Medicine and Science: Physical Sciences
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content: Science & Mathematics
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content: Optics
creditLine: label: Credit Line
content: Columbia University
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.335220
label: catalog number
content: 335220
label: accession number
content: 315390
objectType: label: Object Name
content: spectroscope
physicalDescription: label: Measurements
content: overall: 17 in; 43.18 cm
label: Measurements
content: overall: 16 3/8 in x 17 1/2 in x 10 3/4 in; 41.5925 cm x 44.45 cm x 27.305 cm