Abstract
IT has been suggested that, for the explanation of the abnormal properties of liquid helium II, a division of the molecules into molecules ‘at rest’ and ‘moving’ ones is an essential feature1,2,3. The free path for collision between molecules of different systems should be very large.
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References
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MICHELS, A., BIJL, A. & DE BOER, J. Effect of an Excitation Energy on the Specific Heat of Liquid Helium II and Its Relation to the Exchange Effect in a Non-Ideal Bose-Einstein Gas. Nature 144, 594–595 (1939). https://doi.org/10.1038/144594b0
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DOI: https://doi.org/10.1038/144594b0
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