Andrew Gideon writes:

[...] I saw something beautiful. Some little business jet passing
overhead suddenly started getting this swirling mist trailing it.
[...]

The sudden part of this phenomenon probably corresponded to a large
change in angle of attack of the jet (perhaps increasing as it slowed
down), which in turn changes the pressure distribution around the
wing. See http://www.av8n.com/how/htm/airfoils.html#sec-pressure.


- FChE