Sgygus: A currently insurmountable obstacle to a plasma-fusion generator is the inability to contain hot plasma for any significant amount of time. If the super-hot plasma could be made to contain itself in some kind of vortex-knot, well, progress.
UsikFark: Pretty sure this was just a current inside of a fluid (water.)
recoil47: It's alternating comments like those above that make Fark great.
Sgygus: UsikFark: Pretty sure this was just a current inside of a fluid (water.)Yes. But my hope is that now a vortex knot can be studied, relevant mathematics will be discovered.
Bob_Laublaw: Yet another step closer to realizing the dream of creating a four-dimensional model of an inverted paradox.
WhyteRaven74: Fluid mechanics is one of the great areas of wide open spaces in physics. For all we know, which can seem like a lot, there's a ton we don't know. We don't even know why certain equations work as they do or how exactly they work, it's why the Navier Stokes equations are on the Millenium Prize list of great unsolved problems. And Navier Stokes is something used every day to design boat hulls, airplane wings and lots of other stuff. In principle one should be able to work out how to tie a vortex into a knot on paper and then do it in the lab, but we're actually pretty far from being able to do that currently. As for why you'd want to do it, as has been mentioned might lead to a way to sustain fusion reactions.
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