Conical Prism
notes: label: Description
content: This is a conical glass prism mounted on a brass base that, in turn, would fit on an optical bench. The “J. DUBOSCQ / A PARIS” inscription refers to Jules Duboscq (1817-1886), an optical instrument maker who began working on his own in the early 1850s, and who noted that this instrument produced a circular spectrum. This item was used by cadets at the U.S, Military Academy.
label: Description
content: Ref: Jules Duboscq, <i>Catalogue Systématique des Appareils D'Optique</i> (Paris, 1870), p. 19.
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
creditLine: label: Credit Line
content: United States Military Academy
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.315762
label: accession number
content: 217544
label: catalog number
content: 315762
objectType: label: Object Name
content: conical prism
physicalDescription: label: Measurements
content: overall: 40 1/2 in x 15 in x 9 in; 102.87 cm x 38.1 cm x 22.86 cm
label: Measurements
content: overall: 16 in x 4 5/16 in x 3 1/2 in; 40.64 cm x 10.95375 cm x 8.89 cm