Search results
Results From The WOW.Com Content Network
A vacuum flask (also known as a Dewar flask, Dewar bottle or thermos) is an insulating storage vessel that slows the speed at which its contents change in temperature. It greatly lengthens the time over which its contents remain hotter or cooler than the flask's surroundings by trying to be as adiabatic as possible.
A self-pressurising dewar (silver) being filled with liquid nitrogen from a larger storage tank (white). A cryogenic storage dewar (or simply dewar) is a specialised type of vacuum flask used for storing cryogens (such as liquid nitrogen or liquid helium), whose boiling points are much lower than room temperature.
This page was last edited on 1 October 2012, at 18:29 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
Dewar may refer to: Clan Dewar; Dewar (caste), a fishing caste from India; Vacuum flask (also known as a Dewar flask), a vacuum-insulated container used to maintain internal temperature for extended periods, named for British chemist James Dewar. Cryogenic storage dewar, a specialized vacuum flask for extremely cold fluids
The vacuum flask was so efficient at keeping heat out, it was found possible to preserve the liquids for comparatively long periods, making an examination of their optical properties possible. Dewar did not profit from the widespread adoption of his vacuum flask – he lost a court case against Thermos concerning the patent for his invention ...
Thermos LLC is a manufacturer of insulated food and beverage containers and other consumer products. The original company was founded in Germany in 1904. [2]In 1989, the Thermos operating companies in Japan, the UK, Canada and Australia were acquired by Nippon Sanso K.K., which had developed the world's first stainless steel vacuum bottle in 1978, [3] before it renamed itself Taiyo Nippon ...
In 1892, Sir James Dewar invented a container that could keep liquids hot or cold (the thermos) which led three men – Tsiolkovsky, Robert Goddard, and Hermann Oberth – to construct a large thermal flask for either liquid hydrogen and oxygen or for solid fuel combustion for use in rocket propulsion, applying the thermal flask principle to ...
Volumetric flask is used for preparing liquids with volumes of high precision. It is a flask with an approximately pear-shaped body and a long neck with a circumferential fill line. Dewar flask is a double-walled flask having a near-vacuum between the two walls. These come in a variety of shapes and sizes; some are large and tube-like, others ...