Abstract
The dynamics of a test particle in an infinite tube is investigated. It is proven that the evolution tends to that of a diffusion process as the radius of the tube decreases to zero. This justifies the hypotheses underlying an experiment of Clausing (1930).
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References
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Dedicated to Professor D. C. Pack.
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Babovsky, H. On Knudsen flows within thin tubes. J Stat Phys 44, 865–878 (1986). https://doi.org/10.1007/BF01011911
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DOI: https://doi.org/10.1007/BF01011911