Abstract
IN a recent communication1 under this title, V. J. Clancey has given a short account of a beautiful experiment on this subject. Among his very interesting results he gives a provisional value for the mean displacement xs of adsorbed molecules of the order of a few millimetres. Having been connected with these problems, during the development of a theory of crystal growth from the vapour, in collaboration with W. K. Burton and F. C. Frank2, his value seems to me too high for ordinary temperatures. The purpose of the present communication is to show that much smaller values of xs can be deduced indirectly from Dr. Clancey's results.
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References
Clancey, V. J., Nature, 166, 275 (1950).
Burton, W. K., Cabrera, N., and Frank, F. C., Phil. Trans. (in the press).
Lennard-Jones, J. E., and Devonshire, A., Proc. Roy. Soc., A, 156, 6, 29 (1936).
Andrews, M. R., J. Phys. Chem., 30, 1947 (1927).
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CABRERA, N. Evaporation and Mobility of Naphthalene Molecules. Nature 167, 766–767 (1951). https://doi.org/10.1038/167766b0
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DOI: https://doi.org/10.1038/167766b0
