Question
A wool blanket keeps our body warm. By wrapping the same blanket over the ice, it keeps the ice cold. How would you explain this contradiction?
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Answer
Wool is a bad conductor of heat. Apart from this, wool traps air inside it self and air is a bad conductor, hence no heat can be lost through convection. Woollen blanket keep the body warm by preventing heat loss from our body and hence our body remains warm.
In the case of ice, heat from outside is prevented from reaching the ice by the blanket and thus the ice remains cold.
In the case of ice, heat from outside is prevented from reaching the ice by the blanket and thus the ice remains cold.
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