18 Optical Elements

Object Name: 
18 Optical Elements

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Object Name: 
18 Optical Elements
Maker(s): 
Accession Number: 
53.4.46
Dimensions: 
See Individual Records
Location: 
Not on Display
Date: 
1950-1953
Primary Description: 
18 Optical Elements. Blue, yellow, colorless painted black, silvered, and colorless glass; cast, ground and polished. (A) Circular disc, convex on one side, flat on the other; (B) triangular shape five-sided, bottom surface mirrored; (C) trapezoidal, three sides ground, three sides polished; (D-F) flat circular discs, edges ground; (G) triangular, three sides ground, three sides polished; (H) triangular with circular facet cut on one side, two sides painted black, paint wearing off; (I) circular flat disc, convex on one side, flat on the other; (J-N) circular flat discs; (O) circular disc, flat on one side, convex on the other; (P) flat square, silvered on one side; (Q) circular disc, flat on one side, convex on the other; (R) flat disc, mirrored on one side.