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Summary

Description This Contrail inSan Francisco, California is a sample of w:Crow Instability.w:Crow instability is an inviscid line-vortex instability, named after its discoverer S. C. Crow. It is observed when the vortices caused by aircraft are being whirled from being otherwise straight contrails into spirals then donut-shaped rings.
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Author Brocken Inaglory
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current15:00, 4 April 2008Thumbnail for version as of 15:00, 4 April 20083,888 × 2,592 (2.77 MB)Mbz1{{Information |Description=[http://en.wikipedia.org/wiki/Contrail Contrail] that looked strangely similar to the [http://en.wikipedia.org/wiki/Tsunami tsunami] warning sign below it, which is seen at the street light, San Francisco, California |S

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