Dewar neck

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• Dewar flask — See also: Vacuum flask Dewar flask. (Deutsches Museum, Munich). A Dewar flask is a vessel designed to provide very good thermal insulation. For instance, when filled with a hot liquid, the vessel will not allow the heat to easily escape, and the… …   Wikipedia

• Cryogenic storage dewar — A self pressurising dewar (silver, foreground) being filled with liquid nitrogen from a large storage tank (white, background). Cryogenic storage dewars are specialised types of vacuum flask used for storing cryogens (such as liquid nitrogen or… …   Wikipedia

• Vacuum flask — Thermos redirects here. For other uses, see Thermos (disambiguation). This article is about the vacuum insulated flask. For the flask used in filtration under vacuum, see Büchner flask. Domestic vacuum flask, used for maintaining the temperature… …   Wikipedia

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• vacuum flask — also called  Dewar Vessel, or Thermos Flask,         vessel with double walls, the space between which is evacuated. It was invented by the British chemist and physicist Sir James Dewar (Dewar, Sir James) in the 1890s. Thermos is a proprietary… …   Universalium

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