Noah Ernest Dorsey (1873-1959), US physicist and measurement scientist. Dorsey obtained his doctorate from Johns Hopkins University (1897). He joined
Noah Ernest Dorsey (1873-1959), US physicist and measurement scientist. Dorsey obtained his doctorate from Johns Hopkins University (1897). He joined the National Bureau of Standards (now the National Institute of Standards and Technology) in 1903, working there until his retirement in 1943. His main work was on radioactivity and X-rays. Here, he is examining the freezing point of water. Dorsey showed that impurities and chemicals in water can make it possible to cool samples (seen here) far below the standard freezing point before they froze. Photographed on 9 August 1938, at a laboratory in Washington DC, USA.
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