Dewar flask

A Dewar flask has rigid walls.

Dewar flask is a double-walled flask having a near-vacuum between the two walls.

Alcor workers removed her head and stored it in a nitrogen-cooled Dewar flask.

"Self-contained on the dewar flask," said Dan.

Dewar flasks are named after their inventor, James Dewar, the man who first liquefied hydrogen.

The heat transfer of the Dewar flask can be matched to the heat transfer of a larger package size.

This is achieved by cooling the pump body to low temperatures, typically by immersing it in a Dewar flask filled with liquid nitrogen.

Also "Dewar flask."

He is probably best-known today for his invention of the Dewar flask, which he used in conjunction with extensive research into the liquefaction of gases.

The thermos is commonly called the Dewar flask among chemists in recognition of its inventor, James Dewar.

Long distance transportation of products is by shipping liquid product for large quantities or as dewar flasks or gas cylinders for small quantities.

The Dewar flask: Sir James Dewar (1847-1932)

Whitbread studied it carefully while Potter poured coffee from Dr. Buckman's Dewar flask.

James Dewar, British chemist and physicist (inventor of the Dewar flask or vacuum flask)

At atmospheric pressure, it boils at 195.8 C. When insulated in proper containers such as Dewar flasks, it can be transported without much evaporative loss.

When NICMOS was installed in 1997, the dewar flask contained a 230 pound (104 kg) block of nitrogen ice.

As an alternative to the oven test the SADT for larger packages can be determined by substituting a Dewar flask for the package.

A refrigerated transport Dewar is a refrigerated transport vessel with an insulated Dewar flask (vacuum) design to carry cryogenic liquid.

This required both a considerable reduction in weight of the explosive package and the replacement of the elaborate cryogenic system with Dewar flasks for replenishing boiled-off deuterium.

The CLU's IR detectors are cooled using a Dewar flask and a closed-cycle Stirling engine.

As suggested for example by Carathéodory and used for example by Callen, the favoured instance of an adiabatic wall is that of a Dewar flask.

Dealers say the best container for liquid nitrogen is a Dewar flask, an expensive double-walled glass vessel in which an extra high vacuum insulates the contents against the flow of heat.

In the last case the bottle is constructed with an inner and outer shell separated by a vacuum (dewar flask) so that the low temperature can be maintained by evaporative cooling.

A clerihew much appreciated by chemists is cited in Dark Sun by Richard Rhodes, and regards the inventor of the thermos bottle (or Dewar flask):

After the German glassblowers determined the commercial uses for the Dewar flask, the technology was sold to the Thermos company who used it to mass-produce these flasks for at home use.