毛细管口气泡的曲率半径和附加压力变化

doi:10.3866/PKU.DXHX201803044

University Chemistry ›› 2018, Vol. 33 ›› Issue (10): 110-113.doi: 10.3866/PKU.DXHX201803044

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Evolution of Radius of Curvature and Excess Pressure of a Bubble at the End of Capillary

Zhihui XIE*()

College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, Sichuan Province, P. R. China

Received:2018-03-21 Published:2018-11-01
Contact: Zhihui XIE E-mail:zhxie@cwnu.edu.cn

Abstract

Abstract:

The profiles of the curved surface at critical status during formation of a bubble are drawn schematically, and the dependence of the radius of curvature on time is obtained in this work. The curve is useful for the students to better understand the evolution of radius of curvature and excess pressure in the laboratory experiment of surface tension measurements by the bubble pressure method, and helpful to interpret the exercises regarding excess pressure.

Key words: Capillary, Radius of curvature, Excess pressure, Surface tension

Zhihui XIE. Evolution of Radius of Curvature and Excess Pressure of a Bubble at the End of Capillary[J].University Chemistry, 2018, 33(10): 110-113.

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Evolution of Radius of Curvature and Excess Pressure of a Bubble at the End of Capillary

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