dewar flask

• وعاء معزول بالتفريغ مصمم للحفاظ على درجة حرارة محتواه ثابتة، ويُستخدم عادةً لتخزين السوائل المبردة أو المشروبات الساخنة. سُمي على اسم مخترعه السير جيمس ديوار.

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.

   قارورة ديوار للتبريد العميق

   • 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.