problem solver

January 2001
Science & Children;Jan2001, Vol. 38 Issue 4, p6
Academic Journal
The article demonstrates how a blown-out candle can relight itself. It in not possible for candle wax to burn in its solid form. The wax turns into vapor on obtaining heat from a nearby flame. It then burns by combining with the atmospheric oxygen. When a candle is lighted, some of the wax turns into vapor which burns by combining with the oxygen present in the air. If the candle is blown out, vapor from it continues to rise for some time. Immediately, if a burning candle is held above the blown out candle, vapor from the blown out candle catches fire and the candle is lit up again. So event though it appears as if the blown out candle has relight itself, it is actually the other candle that makes the blown out candle relight. The demonstration should be conducted on a noninflammable surface.


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