https://ohgizmo.com/coolest-thing-ever-a-vortex-cannon-shoots-200mph-cloud-rings
COOLEST. THING. EVER: A Vortex Cannon Shoots 200Mph Cloud Rings | OhGizmo!
Jul 30, 2009 - By David PonceYou kind of have to watch this video. It's a short clip with Jem Stansfield from the UK show Bang Goes The Theory where he demonstrates a vortex...
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