Distribution of reorientation during bacterial tumbles.
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Reorientation distribution (circles) during tumbles (obtained on about 1200 tumble events, from Berg and Brown ) and best fit (solid line) obtained from Eq.2 corresponding to Dr = 3.5 rad2/s. The tumble times are described by a discrete exponential distribution (mean value <τtumble> = 0.14 s, time step Δτtumble = 0.1 s, same conditions as in ). The distribution of reorientation is well described by a rotational diffusion process.