A method is described for the measurement of the viscosity of molten metals at temperatures up to about 900° C. The metal is contained in a cylindrical crucible which is allowed to oscillate about its axis under the control of the torsion in a suspension wire. The theory of the method is considered. The viscosity of zinc has been determined in the temperature range 430° C. to 480°C. and the results are given.
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Hopkins et al. (1950) studied this question.
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