Vacuum flask, illustration - Stock Image - C050/7549 - Science Photo Library
Vacuum flask, illustration - Stock Image - C050/7549 - Science Photo Library
Illustration of a thermos or vacuum flask. The internal chamber, and the liquid that is contains (brown), is kept hot or cold by an insulating vacuum in the double wall of the inner receptacle. SCIENCE PHOTO LIBRARY
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thermos flask - Keyword Search - Science Photo Library
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Conduction, convection, radiation, illustration - Stock Image
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