What is the heat transfer in toaster?
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Toaster ovens heat food through conduction, convection, and radiation. ... Conduction: Conduction is the direct transfer of heat from a hot object into a cooler one in contact with it. This process occurs in toaster ovens where the baking pan or toaster oven rack is in contact with food.
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The basic idea behind any toaster is simple. A toaster uses infrared radiation to heat a piece of bread (see How Thermoses Work for information on infrared radiation). When you put your bread in and see the coils glow red, the coils are producing infrared radiation. The radiation gently dries and chars the surface of the bread.
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