Why does this happen in a candle?

I have a gel candle and when it is burning, there are little bubbles in a perfect circle about 1/2 an inch away from the wick, but it isn't the "...



I have a gel candle and when it is burning, there are little bubbles in a perfect circle about 1/2 an inch away from the wick, but it isn’t the "harder" part of the gel it is the softer part. Why is that doing that and what is making the minature bubbles for this perfect circle (+) ? Just curious.

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2 Responses to “Why does this happen in a candle?”

  1. dragonwing says:
    August 30, 2009 at 2:23 pm

    The gel naturally has air in it that you cannot see and when the gel heats up, the air pockets all join together into the bubbles you see.

    They congregate that far away from the wick because further away the gel isn’t got enough to release the air and the heat of the flame pushes them away from the wick.

  2. Terisu says:
    August 30, 2009 at 2:23 pm

    I’d say it’s probably imperfections in the gel. Maybe water droplets that evaporate as soon as they’re released.

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