Abstract
Abstract Capillarity refers to the ability of a liquid to move within narrow spaces such as tubes and pores with reduced diameters or between two oblique plates with a very small angle between them. It is well known that the height a liquid can reach due to capillarity is directly related to the values of the surface tension, the density, and the contact angle. In this investigation, a study is conducted on the dependence of these properties on the glycerol concentration in an aqueous solution and on the water temperature. The experimental device used is a capillary formed by two oblique glass plates, which allows for the direct observation of the liquid height variation as a function of the separation angle between the plates. This phenomenon is studied using Jurin's law, widely used in the study of capillarity. The results are explained using the Connors-Wright surface tension model and the Eötvös rule. The experiment is very low cost and easy to implement in undergraduate science laboratories, making it useful for exploring the capillarity phenomenon of liquids.
Published Version
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