Author:
Benson C. B.,Hallett A. C. Hollis
Abstract
Measurements of the viscosity of liquid helium II have been made using an oscillating sphere. This method avoids the necessity of a "corner" correction unavoidable when a circular disk is used, and therefore eliminates the uncertainty associated with such a correction. Calibration experiments showed the presence of a significant contribution to the observed damping of the oscillations which arose from the viscous drag of the gas surrounding the rod which connected the sphere with the torsion suspension fiber. This damping has been calculated and when applied to the results obtained in liquid helium II, the values of the viscosity of the normal component which were obtained agree with those obtained by the rotating cylinder method within the combined experimental uncertainties. The assumed density of the normal fluid was that obtained from the velocity of second sound, and the most accurate thermal data available.
Publisher
Canadian Science Publishing
Subject
General Physics and Astronomy
Cited by
17 articles.
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1. The viscosity of dilute Bose–Einstein condensates;Physica Scripta;2015-10-01
2. Viskosität;Eigenschaften der Materie in ihren Aggregatzuständen;2013
3. Illustration;Helium Three;2001-05-10
4. Symbols;Helium Three;2001-05-10
5. Preface;Helium Three;2001-05-10