Abstract
I AM grateful to Prof. Satterly for directing attention to the discrepancy. Accepting 5 × 4 = 20 as the molar latent heat of evaporation of helium, the value 31.3 calculated with the aid of the Clausius-Clapeyron equation is certainly wide of the mark; so is 36.2 which I calculated from my equation using Prof. Burton's data. But as my equation was derived on the assumption that the Clausius-Clapeyron equation holds, clearly if the latter fails the former may be expected to do so also.
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References
Rev. Mod, Phys., 8, 356 (1936).
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FRIEND, J. Latent Heat of Evaporation of Liquid Helium. Nature 139, 472–473 (1937). https://doi.org/10.1038/139472b0
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DOI: https://doi.org/10.1038/139472b0
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