大学物理 ›› 2010, Vol. 29 ›› Issue (3): 35-35.

• 著者文摘 • 上一篇    下一篇

用电子天平测定液体表面张力系数结果的分析

王世亮 马美仲   

  1. 鲁东大学物理学院,山东烟台264025
  • 出版日期:2010-03-25 发布日期:2010-03-20

Analysis on the measurement of the surface tension coefficient for the liquid with electronic balance

  • Online:2010-03-25 Published:2010-03-20

摘要: 用电子天平测量金属环从水中拉出过程表面张力的变化,对测量结果进行分析修正,明确了用脱环法测定表面张力系数的正确计算公式.

关键词: 表面张力系数, 脱环法, 极大值

Abstract: A method for measuring the surface tension coefficient with electronic balance by drawing metal loop off liquid level is introduced and the cause for drift of the balance index is explained. A model for the liquid film is built in order to analyze measurement results and compare with theoretical value. Then a formula and corresponding attention are clarified.

Key words: surface tension coefficient, loop-off method, maximum

中图分类号: 

  • O552.42