Rock salt prism and gratings used in infra-red spectrum work, 1920-1940.
2 8 c m
40cm
actual image size: 32cm x 20cm

Rock salt prism and gratings used in infra-red spectrum work, 1920-1940.

© Science Museum / Science & Society Picture Library

Description

Prism and infra-red diffraction gratings used by Sir Gordon Sutherland and Norman Sheppard at Cambridge during the Second World War in the analysis of hydrocarbons present in enemy fuels using infra-red spectroscopy. One such use was to determine to what extent Germany was converting coal into oil. The prism was used in conjunction with the infra-red diffraction gratings, also acquired, which had been purchased in the 1930s from Michigan University. Acquisition of these items by the Science Museum provides the opportunity for strong stories on the use of novel scientific techniques in warfare, and of the use of science by the state.
 

Image Ref.

10460748
 

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