2010•Journal of Xinxiang UniversityRequires access

Evaluation of Uncertainty Degree in the Experiment of Measuring Viscosity Coefficient of Liquid by Falling-ball Method

Zhendong Pan

Abstract

The paper analyzed how to report the results of physical measurements based on the experiment of measuring viscosity coefficient of liquid by falling-ball method.The calculation method for two types of uncertainty is discussed.The total uncertainty of directly repeated measuring result is expressed by type A and type B of uncertainty through square sum root method.The total uncertainty of measuring result u=(uA2+uB2)～(1/2) can be obtained.

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Key concepts: Ball (mathematics), Falling (accident), Square root, Viscosity, Mathematics, Measurement uncertainty, Root mean square, Mechanics