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Licemer1 [7]
3 years ago
14

A thermos flask has a vacuum between the double walls why?​

Health
1 answer:
Gala2k [10]3 years ago
3 0

Explanation:

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.

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