NATIONAL PHYSICAL LABORATORY: SCIENCE AND TECHNOLOGY IN WARTIME, TEDDINGTON, MIDDLESEX, ENGLAND, UK, 1944
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A general view of the radiation section in the Light Division of the National Physical Laboratory in Teddington. In the foreground, a female scientist works at a piece of apparatus used to test the absorbing properties of materials regarding infra-red and ultra-violet. This is particular important with regard to the development of sunglasses and welding goggles, as the glass used in these items must be able to absorb infra-red and ultra-violet radiation in order to protect the eyes of the wearer.