How are the three modes of heat transfer prevented by a thermos flask? - Quora
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Thermos Flask | Definition, Examples, Diagrams
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VACUUM FLASK | English meaning - Cambridge Dictionary
Thermos Flask | Definition, Examples, Diagrams
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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Vacuum flask - Wikipedia
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My thermos flask worked fine for a few months until it suddenly stopped keeping the heat in entirely. How do vacuum flasks stop working? - Quora
