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 aluminium coated glass container. The internal walls of the flask are coated with aluminium to reflect heat that is radiated away. Most of the heat will be gained or lost through the neck of the flask | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Kinsman, Ted |
Bildgröße: | 4179 px × 6600 px |
Modell-Rechte: | nicht erforderlich |
Restrictions: |
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