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verdigris
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I was looking at this animation of vortex being shed by a cylinder http://ctr.stanford.edu/gallery/cyl3900.html
and was wondering if the side to side periodic motion of the vortex is what causes a flag to fly in a wavy way on a pole?
and was wondering if the side to side periodic motion of the vortex is what causes a flag to fly in a wavy way on a pole?
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