Sir
In his News and Views Feature “Where drunkards hang out” (Nature 413, 686–687; 2001), Ian Stewart states “Brownian motion is no longer important in its original physical context”. I beg to differ. Analysis of diffusion as brownian motion is central to understanding the physics of diffusion-controlled biochemical reactions, such as ion permeation through protein channels, to take one example.
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Jakobsson, E. Motion and meaning. Nature 414, 394 (2001). https://doi.org/10.1038/35106726
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DOI: https://doi.org/10.1038/35106726