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Citation: XIE Zhihui. Evolution of Radius of Curvature and Excess Pressure of a Bubble at the End of Capillary[J]. University Chemistry, ;2018, 33(10): 110-113. doi: 10.3866/PKU.DXHX201803044 shu

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

XIE Zhihui

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

Received Date: 21 March 2018

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.
- Capillary,
- Radius of curvature,
- Excess pressure,
- Surface tension
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