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Turbulence has famously been called "the last great unsolved problem in classical physics" by Richard Feynman. Indeed, the chaotic nature of turbulence makes it nearly impossible to predict, and we are forced to talk about averages and probabilities. A recent paper in the journal Physical Review Letters takes a stab at the problem by making more precise measurements of the persistence of turbulence than any previous study. In particular, they focused on the probability that a puff of turbulence will decay back into laminar, non-turbulent, flow.
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