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Conical Prism
From the collection of National Museum of American History. Free to download, adapt and use — no permission needed.
About this work
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.
National Museum of American History’s own descriptionSubjects
Credit lineConical Prism. National Museum of American History, United States Military Academy. CC0.
