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One can see jet trails behind an airplane. I know that they form because of rapid condensation of Jet exhaust. But I can't figure out why some remain for too long time (hence, longer) while some are smaller and disappear rapidly. Does this depend on height of airplane or some other parameter ?

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  • $\begingroup$ Hey thanks, for the answer. Can you tell me, how can I delete my question now? $\endgroup$ Commented Apr 20, 2016 at 11:08
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    $\begingroup$ @AbhishekVerma We prefer if duplicate questions remain, it helps broaden the surface area that searches will reach and helps point people to the correct answer. $\endgroup$ Commented Apr 20, 2016 at 11:26

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