Why do two layers of cloth of equal thickness provide warmer covering than a single layer of cloth of double the thickness?
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Explanation:
Two layers of fabric of equal thickness enclose between them a layer of air which is a poor heat conductor and prevents the body's heat from going out while a single layer of double-thick cloth can not provide enough heat insulation.
Moreover, the fabric and weaving of the cloth also play a role to determine the thickness.
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