optical glass
Object Name5 Pieces of Optical Glass
Made FromGlass
Dateabout 1955-1959
Place MadeU.S.S.R.
Techniqueground, polished
SizeSee Individual Records
Accession Number59.3.57
Credit LineGift of Dr. Charles Bradley
Curatorial Area(s)
Not On View
Physical DescriptionColorless 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
Source
Charles Bradley
- 1959
perhaps 1-99
200-399
perhaps 1-99
perhaps 1-99
about 1955-1959
