Le lundi 14 novembre 2005 à 19:34 -0600, Dave Culp a écrit :

Yes they are. But now that you mention it I've been playing around with them, trying to get a better look. Here's a screenshot:

     http://home.comcast.net/~davidculp2/contrails_001.jpg


Hmm, interesting.  But, real contrails develop some considerable distance
behind the aircraft, after the hot core exhaust has lost heat through diffusion and turbulence. Then, the turbulence and diffusion continues to spread the trail,
so it gets LARGER the farther behind the aircraft it is.

Jon


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