what heats up and being to glow? class 6 answer in few words
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The most famous example is an incandescent light bulb. Inside the glass bulb is small piece of metal (filament) made of tungsten. ... So hot, in fact, that it gives off enough energy to cause the filament to glow. This is the same reason that the cooking elements on an electric stove glow red when they heat up.
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Originally Answered: Why do things glow when they are heated? It happens due to thermal radiation. When a body is having temperature higher than absolute temperature (i.e., 0 K), it emits radiation. If frequency of the radiation is in the visual range the body "glows".
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