WISE THINGS THAT SEEM FOOLISH.
If we wear flannel to keep ourselves warm it would seem absurd to wrap a block of ice in flannel to prevent it from melting. But it would be quite the right .thing to do. We do not wear flannel to make us warm but to prevent the warmth from passing out of our bodies. Flannel is simply a bad conductor of heat. What happens when we wrap up ice in flannel is that we prevent heat from passing through to the ice from outside: we have put a barrier between heat and cold.
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Bibliographic details
Dominion, Volume 28, Issue 169, 13 April 1935, Page 23
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99WISE THINGS THAT SEEM FOOLISH. Dominion, Volume 28, Issue 169, 13 April 1935, Page 23
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