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Candle Oscillations

​I observed one night a candle burning brightly, then dimming, then building again and burning brightly, with a period of about 30 seconds. I observed the oscillations for a few minutes and thought to myself: Delayed Feedback. 

Not all candles do that, so why did this one? The wick had folded over on itself such that the volume of the wick compared to its evaporative surface was high. Additionally, the cross sectional area of the wick at the level of the wax puddle was still rather low. 

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Practice for learning Insight software.


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