Dewar flask


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Dew·ar flask

 (do͞o′ər, dyo͞o′-)
n.
An insulated container used especially to store liquefied gases, having a double wall with a vacuum between the walls and silvered surfaces facing the vacuum.

[After Sir James Dewar (1842-1923), British chemist and physicist who invented it.]

Dewar flask

(ˈdjuːə)
n
(Chemistry) a type of vacuum flask, esp one used in scientific experiments to keep liquid air, helium, etc; Thermos
[C20: named after Sir James Dewar]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Dewar flask - vacuum flask that holds liquid air or helium for scientific experimentsDewar flask - vacuum flask that holds liquid air or helium for scientific experiments
vacuum bottle, vacuum flask - flask with double walls separated by vacuum; used to maintain substances at high or low temperatures
References in periodicals archive ?
Tenders are invited for supply of asiq dewar flask,3l for existing bet surface area measurement setup
This naturally carried on to some of the famous inventors that we have had in history, like Alexander Graham Bell, who invented the telephone, and Sir James Dewar, the inventor of the Dewar flask.
A Dewar flask consists of a double wall, with the space between the two walls exhausted to a very high vacuum, to minimize transfer of heat by convection and conduction.
Taking a good look at the subject of dewar flask pre-evacuation is particularly useful because the family includes devices that span a wide range and share most of the problems of all the other sealed-off devices.
So before each observing run Larson and I stopped by a cryogenic supply facility to fill our Dewar flask with this supercold -196[degrees]C (-321[degrees]F) liquefied gas.