Replica reflection grating on glass base 4 x 3 x 1/2-inches (3600 lines/inch)
Replica reflection grating on glass base 4 x 3 x 1/2-inches (3600 lines/inch). Made from a ruled cylinder using Merton's method, vacuum-coated with aluminium, from National Physics Laboratory, Teddington, London, c. 1950
Details
- Category:
- Optics
- Object Number:
- 1952-461
- Materials:
- glass, aluminium (metal) and gelatin
- Measurements:
-
overall: 77 mm x 103 mm x 14 mm, , .255kg
- credit:
- National Physical Laboratory.