Why do candles flicker?

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Tags

1. #unburned
2. #light
3. #flicker
4. #action
5. #flame
6. #candle
7. #carbon
8. #particles
9. #melts
10. #liquid
11. #combust
12. #drawn
13. #escape
14. #fully
15. #flare
16. #little
17. #before
18. #capillary