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  • Humans control complex objects by exploiting their stability

    Physics Today - 10/01/2018

    Dagmar Sternad of Northeastern University in Boston, her postdoc Salah Bazzi, and their colleagues have turned to a different way of evaluating stability that’s applicable to transient motions like moving a cup of coffee from one point to another. Rather than analyzing perturbations about a steady-state closed orbit in phase space, they applied a method that considers pairs of closely spaced trajectories and how the distance between them evolves in time. A region of phase space is deemed stable if the trajectories converge exponentially.

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