Terme de Glossaire

convection

Convection is the transfer of energy from one place to another involving the movement of matter in the environment, compared with heat conduction or the diffusion of matter. A good example of convection is the transfer of heat through water in a pan placed on a heat source. The particles of liquid close to the bottom of the pan are heated and dilate, therefore becoming less dense and rising. Those on the surface of the pan are cooled through contact with a cooler environment, and therefore contract and increase in density before sinking.

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