by Franet on April 14th, 2009

Franet

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What is the smoke coming from the wings of commercial aircraft coming in for landings

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  • by raylrodr on April 14th, 2009

    raylrodr

    Those spiraling trails of vapor are called "wing tip vortices". They are caused by the compression of air rolling off the wingtips. What you see is water vapor just prior to condensing into water.

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