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Description: | 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. | License: | http://creativecommons.org/licenses/by-nc-sa/2.5/ | Subjects: | diffraction grating - transmission | Temporal: | 1907-1949 (estimated) | Source: | Science Museum | Identifier: | 2000-1463 | Go to resource |
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