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How is the vacuum flask insulated? How does it work?
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Draw a labelled diagram of a thermos flask. Explain how the transfer of heat by conduction, convection and radiation is reduced to minimum in it.
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Explain the design of a thermos flask.
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Five key facts about glass refill in a vacuum flask
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Draw a labelled diagram of a thermos flask Describe its working
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Physics behind Thermos flask - eigenplus
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Explain Why the space between the two walls in a thermos flask is vacuum?
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