What is another name for the vacuum flask?
Thermos
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Answer
Thermos is another name for the vacuum flask, a device designed to maintain the temperature of its contents. It consists of two glass flasks, one inside the other, with a vacuum between them. This vacuum prevents heat transfer by conduction and convection, while a reflective coating on the inner flask minimizes heat loss by radiation. As a result, the contents of a thermos remain hot or cold for extended periods.
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