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Old 19th Nov 2005, 17:37   #6 (permalink)
Cornish Jack
Join Date: Feb 2000
Location: UK
Posts: 1,131
Not all contrails are the same, visually - B52s, for instance are very individualistic - sort of broken figure eights. Presumably vortex effects etc will modify the way they form....... and, of course, the amount of behaviour modifying chemicals they are dispersing at the time!!
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