Abstract
IT was discovered some time ago1 that when heat flowed in helium II down a narrow capillary or through a tube filled with powder, liquid was forced up the tube in the opposite direction. It was considered at the time that the phenomenon, which has been called the ‘fountain effect’, was associated in some way with the surface of the capillary or of the powder particles. Recent experiments by Daunt and Mendelssohn2, who have proved the thermodynamic reversibility of the effect, have tended to confirm the idea that it is a surface phenomenon. The thermodynamic aspects of the effect have been treated in a recent paper by H. London3.
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References
Allen, J. F., and Jones, H., NATURE, 141, 243 (1938).
Daunt, J. G., and Mendelssohn, K., NATURE, 143, 719 (1939).
London, H., Proc. Roy. Soc., A, 171, 484 (1939).
Allen, J. F., and Reekie, J., Proc. Camb. Phil. Soc., 35, 114 (1939).
London, F., Amer. J. Phys. Chem., 43, 49 (1939).
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ALLEN, J., REEKIE, J. Forces Associated with Heat Flow in Helium II. Nature 144, 475–476 (1939). https://doi.org/10.1038/144475a0
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DOI: https://doi.org/10.1038/144475a0
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