# science

Why is an incandescent bulb hot to touch when it has been switched on for a while?

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asked by shrutika
1. http://www.highlightskids.com/science-questions/how-do-light-bulbs-work

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posted by Ms. Sue
2. The incandescent bulb heats the filament (typically a coil of wire) to thousands of degrees so that it glows.

Since the bulb itself is generally at most a few inches from the filament, it gets pretty hot as well.

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posted by Aarti

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