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James Dewar, Scottish-English chemist and physicist (died 1923)
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James Dewar
British chemist and physicist (1842–1923)
Sir James Dewar was a Scottish chemist and physicist. He is best known for his invention of the vacuum flask, which he used in conjunction for his research into the liquefaction of gases. He also studied atomic and molecular spectroscopy, working in these fields for more than 25…Source: Wikipedia (CC BY-SA)
September 20
Day of the year
September 20 is the 263rd day of the year in the Gregorian calendar; 102 days remain until the end of the year.Source: Wikipedia (CC BY-SA)