Question

what is the luminous visible part of a fire called​

Answer 1

Answer:

Outermost nonluminous zone of complete combustion : This zone is faintly visible and surrounds the yellow luminous part of the flame. In this zone, the wax vapour undergoes complete combustion because plenty of air is present around it. This zone is the hottest part of the candle flame.

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Answer 2

Answer:

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