X-ray of a Thermos

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X-ray of a thermos or vacuum flask. The internal chamber (red), and the liquid that it contains, is kept hot or cold by an insulating vacuum.  The vacuum is contained in an aluminum coated glass container.  The internal walls of the flask are coated with aluminum to reflect heat that is radiated away. Most of the heat will be gained or lost through the neck of the flask. .
X-ray of a thermos or vacuum flask. The internal chamber (red), and the liquid that it contains, is kept hot or cold by an insulating vacuum. The vacuum is contained in an aluminum coated glass container. The internal walls of the flask are coated with aluminum to reflect heat that is radiated away. Most of the heat will be gained or lost through the neck of the flask. .
Filename: K11X-thermos1.jpg
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