Question

In olden times when we used to cook the food on chulha , we used to light the papers , dry grass or some pieces of wood. It would not catch the fire so we used to blow the air from a pipe so that it could catch fire instantly. But at the same time, we use a blow of air to extinguish the flame of a candle . So the question is how the blow of air can also create fire and can also extinct fire?

Answer 1

because in the first case the air is given in a small quantity which is utilized for increasing fire in the second case the is provided in excessive amount which results in extinguish of fire
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Answer 2

when we blow air on a chulha the on wood it burn as because the amount of air that is required to it is given.
where as in a candle it's different because it is burn with the thread in it so it extinct the for.