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March 7, 2013 01:14 am PST

Vortex smoke rings created with 3D printed wings

Scientists tie vortex rings (smoke rings, basically) into knots using 3D printed wings. Includes high speed video, also in 3D.

Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/Iv3cxU8iepU/vortex-smoke-rings-created-wit.html

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