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  • Title: [A tentative analysis on the principle of capillary tube viscometer].
    Author: Qin R, Liang Y, Zhang Y.
    Journal: Sheng Wu Yi Xue Gong Cheng Xue Za Zhi; 2009 Oct; 26(5):992-5. PubMed ID: 19947475.
    Abstract:
    As there is justification showing that Poiseuille's Law is not suited for vertical Capillary tube viscometer, Poiseuille's Law has not been used to deduce the calculation formula for measuring liquid viscosity by means of vertical Capillary tube viscometer; it can only be used to deduce the calculation formula for measuring liquid viscosity by horizontal capillary tube viscometer. In this article, we explained the extension of Poiseuille's Law to deduce the Calculation formula for measuring liquid viscosity by using shallow pool and deep pool Capillar tube viscometer, and so corrected the mistakes in using Poiseuille's Law for a long time.
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