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John-Dalton-engraving.jpg
EDITORIAL USE ONLY: Engraving of the English chemist & physicist John Dalton (1766-1844) as an old man. Dalton is best know for his work on the natural laws governing the behaviour of gases (Daltons's Law) and of his insights into the theory of atoms and their relative atomic weights. As he also had a colour vision condition and produced papers on the topic the term 'Daltonism' became synonymous with many forms of colour-blindness. Original engraving held by the Manchester Literary & Philosophical Society.