Whether it is our homes, ourselves, or just a pot of tea, keeping warm at this time of year can be a problem. Gerd Sommerhoff describes the way in which objects lose heat and suggests how this can be prevented.
for Schools
(to 11.55)
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Whether it is our homes, ourselves, or just a pot of tea, keeping warm at this time of year can be a problem. Gerd Sommerhoff describes the way in which objects lose heat and suggests how this can be prevented.
for Schools
(to 11.55)
