What is the white smoke behind airplanes?
negibeast:
it is the instanteneous condensation of air molecule present in air,generated due to heat of engine
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They are called contrail which is a short form of condensation trail.
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plane engine works at higher temperature similar to a automobile engine. so the exhaust gase is hot. the trail(white smoke) is seen only when the outside vapour pressure and temprature is much less than the exhaust. hope it helps
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