Diffraction grating with focal power
- Made:
- 1973-1983 in United Kingdom
Diffraction grating with focal power, produced by interference, unsigned, United Kingdom, 1973-1983. Used by the National Physical Laboratory.
Details
- Category:
- Optics
- Object Number:
- 1983-425
- Materials:
- glass, paper (fibre product) and plastic (unidentified) tape
- Measurements:
-
overall: 13 mm x 128 mm x 112 mm, .363kg
- type:
- diffraction grating
- credit:
- National Physical Laboratory.