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Description: | Rectangular replica reflection grating (8 x 6 inches) on glass substrate (135 x 265 mm) with wooden case, 600 lines per mm, and 13� ' blaze angle. Made by Bausch & Lomb, Rochester, New York State, USA in 1957, Cat. No. 35.53.27.35, Serial No. 233A7. Separate note indicates that the grating was used with the South Tower echelle at the University Observatory, Oxford. | License: | http://creativecommons.org/licenses/by-nc-sa/2.5/ | Subjects: | diffraction grating - reflection | Temporal: | 1957 | Source: | Science Museum | Creator: | Bausch and Lomb Inc. | Identifier: | 2001-690 | Go to resource |
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