CC0 · no rights reserved
Prism
From the collection of National Museum of American History. Free to download, adapt and use — no permission needed.
About this work
Here, a small equilateral flint glass prism, blackened on one side, is mounted on a simple brass stand.
National Museum of American History’s own descriptionSubjects
Credit linePrism. National Museum of American History, United States Military Academy. CC0.
