How does a filament bulb work?

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3. Is burning PLA toxic?
4. What is the function of flower ovary?
5. Are PLA fumes harmful?
6. What is the function of stigma?
7. Is heated bed needed for PLA?
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Tags

1. #tungsten
2. #electricity
3. #normal
4. #metal
5. #surrounded
6. #usual
7. #light
8. #inert
9. #incandescent
10. #nonreactive
11. #flows
12. #argon
13. #gives
14. #filament
15. #through