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Keeping in mind that not all flasks are vacuum, Please help me explain how other flasks prevent heat loss?​
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Keeping in mind that not all flasks are vacuum, Please help me explain how other flasks prevent heat loss?​

User Ascanio
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The silver coating on the inner bottle prevents heat transfer by radiation, and the vacuum between its double wall prevents heat moving by convection. The thinness of the glass walls stops heat entering or leaving the flask by conduction.
User Bvowe
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