A researcher whose team investigated the coupling of rotational diffusion and translational diffusion in a freely moving ellipsoid. At short times the particle remembers its orientation, while at longer times rotation averages over directions. The experiment shows how the timescale of observation changes the apparent symmetry of Brownian motion.[ref]
Brownian Motion of an Ellipsoid by Yilong Han and others. pp. 627–628, Figs. 2–3: rotational relaxation and laboratory-frame motion
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