5 Pieces of Optical Glass

Object Name: 
5 Pieces of Optical Glass

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Object Name: 
5 Pieces of Optical Glass
Place Made: 
Accession Number: 
59.3.57
Dimensions: 
See Individual Records
Location: 
Not on Display
Date: 
about 1955-1959
Credit Line: 
Gift of Dr. Charles Bradley
Primary Description: 
Colorless heavy optical glass; ground and polished. (A) Triangle with triangular corners, two sides polished. (B) Six- sided prism with two corners cut into triangles, our sides polished. (C) Four corners cut into triangles, on top a deep curved notch, three sides polished. (D) Prism with four large polished sides and three small unpolished sides, two corners cut into triangles. (E) Spherical object, one side flattened, one side with a circular disc knop the other one with a pedestal- like extension, painted black in such a way that there are four circular windows including flattened side.
Provenance: 
Bradley, Charles, Source
1959