Photographic replica plane diffraction grating
- Made:
- 1907-1949 (estimated) in London
Photographic replica plane diffraction grating, area 19 x 12 mm, on glass plate, wrapped in an envelope marked in manuscript 'Gratin (Replica) / made by photographing in much / reduced size a grating of lines / ruled in India ink on paper / by Mr. Barrow / I.C.Sc.T'. Very coarse line spacing.
Details
- Category:
- Optics
- Object Number:
- 2000-1463
- Materials:
- glass and photographic emulsion
- Measurements:
-
glass plate: 1 x 42 x 41 mm
- credit:
- Imperial College of Science,Technology & Medicine (Spectroscopy Group)
