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Sir James Dewar FRS FRSE (/ dj uː ər / DEW-ər; [1] 20 September 1842 – 27 March 1923) was a Scottish chemist and physicist. He is best known for his invention of the vacuum flask , which he used in conjunction with research into the liquefaction of gases.
Diagram of a vacuum flask Gustav Robert Paalen, Double Walled Vessel. Patent 27 June 1908, published 13 July 1909. The vacuum flask was designed and invented by Scottish scientist James Dewar in 1892 as a result of his research in the field of cryogenics and is sometimes called a Dewar flask in his honour.
Invention of the Twinkie: Spouse: ... James Alexander Dewar (February 5, 1897 – June 30, 1985) was a Canadian inventor known for inventing the Twinkie in 1930.
James Dewar . Sir James Dewar FRS FRSE (/ dj uː ər / DEW-ər; 20 September 1842 – 27 March 1923) was a Scottish chemist and physicist.He is best known for his invention of the vacuum flask, which he used in conjunction with research into the liquefaction of gases.
Twinkies were invented on April 6, 1930, by Canadian-born baker James "Jimmy" Alexander Dewar for the Continental Baking Company [11] in Schiller Park, Illinois. [12] Realizing that several machines used for making cream-filled strawberry shortcakes sat idle when strawberries were out of season, Dewar conceived a snack cake filled with banana ...
1898 – James Dewar liquefies hydrogen by using regenerative cooling and his invention, the vacuum flask at the Royal Institution of Great Britain in London. 1899 – James Dewar collects solid hydrogen for the first time. 1900 – Count Ferdinand von Zeppelin launches the first hydrogen-filled Zeppelin LZ1 airship.
A cryogenic storage dewar (or simply dewar) is a specialised type of vacuum flask used for storing cryogens (such as liquid nitrogen or liquid helium), whose boiling points are much lower than room temperature. It is named after inventor James Dewar, who developed it for his own work.
1892 – James Dewar invents the vacuum-insulated, silver-plated glass Dewar flask; 1894 – Marcel Audiffren, a French Cistercian monk, patented a hand-cranked device that did not lose coolant to the atmosphere.