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amanda68 | 20:32 Tue 20th Mar 2001 | How it Works
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What part of a lightbulb produces the light
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Avatar Image PeteMat
Light is produced by the 'filament'. This is a thin wire, made of tungsten (usually) and coiled like a minature telephone handset cord! This glows yellow-white hot when an electric current is passed through it.
22:25 Tue 20th Mar 2001

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