Viscosity of Liquid Helium below the λ-Point

@article{Kapitza1938ViscosityOL,
  title={Viscosity of Liquid Helium below the $\lambda$-Point},
  author={Piotr Leonidovich Kapitza},
  journal={Nature},
  year={1938},
  volume={141},
  pages={74-74}
}
THE abnormally high heat conductivity of helium II below the λ-point, as first observed by Keesom, suggested to me the possibility of an explanation in terms of convection currents. This explanation would require helium II to have an abnormally low viscosity; at present, the only viscosity measurements on liquid helium have been made in Toronto1, and showed that there is a drop in viscosity below the λ-point by a factor of 3 compared with liquid helium at normal pressure, and by a factor of 8… Expand
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IT was found by Rollin1 and by Keesom and Keesom2 that liquid helium II shows an extra-ordinarily high heat conductivity, of the order of 190 cal./deg.cm.sec. We have measured the heat conductivity… Expand
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