who was invite the vacuum flask?
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Step-by-step explanation:
FEW laboratory devices have achieved the popularity of the vacuum flask. Since Sir James Dewar designed it for the purpose of preventing his liquid air from rapid evaporation, the flask has become a household friend and an invaluable tool in the laboratory and the workshop.
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Answer:
James Dewar's in 1892
Step-by-step explanation:
he had been interested in liquid gases for over ten years, first demonstrating the research of others (performing the first public demonstration in Britain of the liquefaction of oxygen) and then beginning his own investigation
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