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  2. Cryogenic storage dewar - Wikipedia

    en.wikipedia.org/wiki/Cryogenic_storage_dewar

    A self-pressurising dewar (silver) being filled with liquid nitrogen from a larger storage tank (white). 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.

  3. Refrigerated transport Dewar - Wikipedia

    en.wikipedia.org/wiki/Refrigerated_transport_Dewar

    A non refrigerated air-transportable dewar for 750 liters of liquid hydrogen was developed by H.L. Johnston in ca. 1952. [2] The heat flow to the liquid hydrogen shell was 4 watts, boil-off about 7.5 liters per day, or 1% of the rated capacity. They were equipped with valves, instruments, and a vacuum pump.

  4. Headquarters of the United Nations - Wikipedia

    en.wikipedia.org/wiki/Headquarters_of_the_United...

    The complex has a street address of United Nations headquarters, New York, NY, 10017, United States. For security reasons, all mail sent to this address is sterilized, so items that may be degraded can be sent by courier. [136] The United Nations Postal Administration issues stamps, which must be used on stamped mail sent from the building. [137]

  5. Cryogenics - Wikipedia

    en.wikipedia.org/wiki/Cryogenics

    Nitrogen is a liquid under −195.8 °C (77.3 K).. In physics, cryogenics is the production and behaviour of materials at very low temperatures.. The 13th International Institute of Refrigeration's (IIR) International Congress of Refrigeration (held in Washington DC in 1971) endorsed a universal definition of "cryogenics" and "cryogenic" by accepting a threshold of 120 K (−153 °C) to ...

  6. Vacuum flask - Wikipedia

    en.wikipedia.org/wiki/Vacuum_flask

    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.

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