State the role of vacuum in a thermos flask in short answer
Answers
Answer:
A thermos flask has double walls, which are evacuated and the vacuum bottle is silvered on the inside. The vacuum between the two walls prevents heat being transferred from the inside to the outside by conduction and convection.
Explanation:
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Answer:
The vacuum flask was devised to preserve liquefied gases by preventing the transfer of heat from the surroundings to the liquid. The evacuated space between the walls (which are ordinarily glass or steel) is practically a nonconductor of heat; radiation is reduced to a minimum by silvering the glass or steel.
Explanation:
A thermos flask has double walls, which are evacuated and the vacuum bottle is silvered on the inside. The between the two walls prevents heat being transferred from the inside to the outside by conduction and convection.