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Technical ArticleWhat causes the filament of a light bulb to glow so bright?Time：2019-03-19 13:51:43 Click：
The light bulb makes good use of the heat effect of current, that’s to say, as long as the light filament heats up to an incandescent state, which will glow so bright.
PS: Incandescent state—an object emits white light when the its temperature is more than 1700℃.
Incandescent light bulb - Wikipedia
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