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Title:
Viscosity of Liquid Helium below the λ-Point
Authors:
Kapitza, P.
Affiliation:
AA(Institute for Physical Problems, Academy of Sciences, Moscow. Dec. 3.)
Publication:
Nature, Volume 141, Issue 3558, pp. 74 (1938). (Nature Homepage)
Publication Date:
01/1938
Origin:
NATURE
DOI:
10.1038/141074a0
Bibliographic Code:
1938Natur.141...74K

Abstract

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 compared with the value just above the λ-point. In these experiments, however, no check was made to ensure that the motion was laminar, and not turbulent.
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