DEWAR VESSEL Meaning and
Definition
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A Dewar vessel, also known as a Dewar flask or thermos flask, is a specialized container used for storing and preserving substances at extremely low temperatures. It is designed to maintain the temperature of its contents by minimizing heat transfer to or from the surrounding environment through effective insulation.
Typically made of glass or metal, a Dewar vessel consists of two concentric chambers separated by a vacuum. The outer chamber provides structural support and insulation, while the inner chamber holds the substance to be preserved. The vacuum between the two walls prevents heat transfer via conduction or convection, and the lack of air molecules eliminates thermal energy exchange through conduction and convection.
The name "Dewar" is derived from its inventor, Sir James Dewar, a Scottish chemist and physicist who developed these containers in the late 19th century. Originally, Dewar vessels were primarily used for the storage of liquid gases such as liquid nitrogen and liquid helium, which require extremely low temperatures to remain in a liquid state.
Due to their efficient insulation properties, Dewar vessels are also used in various scientific and industrial applications where precise and stable temperature control is necessary. They are employed in cryopreservation to store biological samples, in laboratories to maintain temperature-sensitive chemicals, and in the transportation of highly perishable materials.
In summary, a Dewar vessel is a double-walled, vacuum-sealed container that is used to store and preserve substances at extremely low temperatures by minimizing heat transfer from the surrounding environment.
Common Misspellings for DEWAR VESSEL
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Etymology of DEWAR VESSEL
The word "Dewar vessel" is named after its inventor, Sir James Dewar. Sir James Dewar was a Scottish chemist and physicist who designed and developed a vacuum flask in the late 19th century. The vacuum flask, also known as a Dewar flask or Dewar bottle, is a double-walled container designed to keep its contents at a constant temperature. Due to his significant contributions to the field of cryogenics, the vessel became popularly known as a "Dewar vessel" in recognition of Sir James Dewar's work.
Similar spelling word for DEWAR VESSEL
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