Vortex loops could untie knotty physics problems

[Bill Angel]

University of Chicago physicists have succeeding in creating a vortex knot, a feat akin to tying a smoke ring into a knot. Linked and knotted vortex loops have existed in theory for more than a century, but creating them in the laboratory had previously eluded scientists.

 

http://news.uchicago.edu/article/2013/03/04/vortex-loops-could-untie-knotty-physics-problems