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The diagram opposite shows how a thermos flask works Summarise the information by selecting and reporting the main features and make comparisons where relevant You should write at least 150 words
How Thermoses (Vacuum Flasks) Work | HowStuffWorks
How Does Vacuum Insulation Work? (in coffee thermoses and travel mugs)
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
How the Thermos / Vacuum Flask works - YouTube
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How is a metal thermos made?
A thermos flask is designed to prevent the contents class 11 physics CBSE
Insulated Drinkware 101 - How Thermoses Work
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How does a thermos work? Design of a vacuum flask! - tec-science
How do vacuum flasks keep hot liquids hot and cold ones cold? – Cheeki
How do Thermos vacuum flasks work? - Explain that Stuff
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
