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Jul 24, 2017 at 11:52 vote accept Joseph O'Rourke
Aug 17, 2012 at 17:59 comment added Ryan Budney Right, William Irvine was one of the group that I was talking with. Randy Kamien and Mark Dennis were the two other condensed matter organizers at the event.
Aug 17, 2012 at 11:57 comment added Joseph O'Rourke Science News article: sciencenews.org/view/generic/id/36400/title/… Irvine, William T. M. and Bouwmeester, Dirk. “Linked and knotted beams of light.” Nature Physics, Vol. 4, September 2008, pp. 716-720.
Aug 17, 2012 at 11:55 comment added Joseph O'Rourke @Ryan: Very interesting perspective, to view it as inside the 3-torus! I was imagining these as world lines, not quite lightrays. I will investigate "knotted light"---Thanks for the insights!
Aug 17, 2012 at 2:09 history answered Ryan Budney CC BY-SA 3.0