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View larger image | Physicist Richard Feynman predicted that vortices that behave like strings of spaghetti would show up in a quantum fluid as energy is added — say by swirling. Interactions among these vortices may help dissipate energy in such systems. Credit: Sources: M.S. Paoletti et al/Physica D: Nonlinear Phenomena 2010, M.S. Paoletti and D.P. Lathrop/Annu. Rev. Condens. Matter Phys. 2011 Credit: Janel Kiley

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