Abstract
Measurements are carried out on the viscosity coefficient of heliumgas at liquid helium temperatures as a function of temperature and pressure. Three different types of apparatus based on the oscillating disc method have been used. The experimental values obtained for the viscosity coefficient as a function of temperature are approximately 10% too high as compared with the theoretical values calculated by De Boer (Physica 10 (1943) 348). The rate of change in the viscosity as a function of pressure agrees very well with the rate of variation found by Ubbink (Physica 13 (1947) 659) for the heat conductivity.
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