dewar flask

• Récipient à double paroi avec vide d'air entre les parois, conçu pour maintenir constante la température de son contenu, souvent utilisé pour stocker des liquides cryogéniques ou des boissons chaudes. Nommé en l'honneur de son inventeur, Sir James Dewar.

A vacuum-insulated container designed to keep its contents at a constant temperature, typically used for storing cryogenic liquids or hot beverages. Named after its inventor, Sir James Dewar.

1. Vacuum flask for cryogenicsC1formal

   A container designed to hold extremely cold liquids, such as liquid nitrogen or liquid helium, by using a vacuum between double walls to minimize heat transfer.

   Vase de Dewar

   • The lab technician carefully poured liquid nitrogen into the dewar flask.
   • Dewar flasks are essential for storing cryogenic samples.
   • The dewar flask kept the liquid helium cold for several hours.