Information AboutJames Dewar |
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Sir James Dewar ( September 20 , 1842 – March 27 , 1923 ) was a Scottish Chemist and Physicist . He was the youngest of six boys, and he lost his parents at the age of 15. He was born in Kincardine-on-Forth and was educated at Dollar Academy and the University Of Edinburgh , where he graduated. Later he became professor at the University Of Cambridge 1875 and was a member of the Royal Institution 1877 . He developed a chemical formula for Benzene and performed extensive work in Spectroscopy for more than 25 years. In 1891 he discovered a process to produce liquid Oxygen in industrial quantities. He developed an insulating bottle, Dewar Flask , still named after him, to study low temperature gas phenomena. He also used this bottle to transport liquid gases like Hydrogen 1898 . In 1905 he observed that cold Charcoal could produce a Vacuum . This technique was quite useful for experiments in atomic physics. He is credited as the inventor of the Vacuum Flask . Along with Sir Frederick Augustus Abel , developed the smokeless explosive whose common name is Cordite . He died in London . EXTERNAL LINKS
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