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Title: Two different gratings used in pioneering work on the infra-red spectrum, 1920-1940 [Go to resource]
Description: Two diffraction gratings used by Sutherland and Sheppard in infra red work License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: diffraction grating - reflection Temporal: c.1930 Source: Science Museum Identifier: http://collectionsonline.nmsi.ac.uk/grab... Go to resource More Like this...
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