why the vaccum flask inverted
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The vacuum flask was devised to preserve liquefied gases by preventing the transfer of heat from the surroundings to the liquid. The evacuated space between the walls (which are ordinarily glass or steel) is practically a nonconductor of heat; radiation is reduced to a minimum by silvering the glass or steel.
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The vacuum flask was devised to preserve liquefied gases by preventing the transfer of heat from the surrounding to the liquid. Theevacuated space between the walls (which are ordinarily glass or steel) is practically
a nonconductor of heat; radiation is reduced to a minimum by silvering the glass or steel.
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