Comments posted by gargravarr
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2. gargravarr commented 15 years ago on video Laser pattern sound test
for further information, see here: http://www.k2.t.u-tokyo.ac.jp/perception/StickyLight/
+4 1. gargravarr commented 15 years ago on video Vortex Smoke Ring Collision
Vortex rings are achievable in most liquids and gases that aren't too viscous. quite a few aerodynamic experiments are done using water as it lets you use slow everything down while still getting relevant results for air (it's all about having using the same reynolds number).
#4, have a look at vortex rings on wikipedia