| 探讨测量液体表面张力系数的优化方法 |
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| 引用本文： | 孔维姝,赵维金. 探讨测量液体表面张力系数的优化方法[J]. 大学物理, 2012, 31(3): 32-34. DOI: 10.3969/j.issn.1000-0712.2012.03.010 |
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| 作者姓名： | 孔维姝 赵维金 |
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| 作者单位： | 1.贵州大学理学院贵州光电子技术与应用重点实验室,贵州贵阳,550025;2.贵州大学理学院贵州光电子技术与应用重点实验室,贵州贵阳,550025 |
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| 基金项目： | 高等学校教育研究项目,贵州省基金 |
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| 摘 要： | 针对用拉脱法测液体表面张力系数的系统误差较大的系列问题,提出了自动降拉双π丝补偿法.用自动化降拉代替手动提拉,提高了操作过程的稳定性;用双π丝代替π丝,消除了拉膜丝的不光滑点;用突变初态和补偿态作为测量状态,有效地排除了浮力、膜重以及侧丝上的表面张力对实验结果的影响.自动降拉双π丝补偿法得到的实验结果,其精度比拉脱法提高3％.
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| 关 键 词： | 液体表面张力系数 稳定性 光滑 补偿法 |
Investigation on optimization method for measuring coefficient of liquid surface tension |
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| KONG Wei-shu , ZHAO Wei-jin. Investigation on optimization method for measuring coefficient of liquid surface tension[J]. College Physics, 2012, 31(3): 32-34. DOI: 10.3969/j.issn.1000-0712.2012.03.010 |
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| Authors: | KONG Wei-shu ZHAO Wei-jin |
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| Affiliation: | (Key Laboratory for Photo Electric Technology and Application of Guizhou Province,School of Science,Guizhou University, Guiyang,Guizhou 550025,China) |
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| Abstract: | In response to the system errors in a series of questions about measuring the liquid surface tension coefficient,an improved method is suggested.With automation down instead of manual to pull,the stability of process is improved;with a pair of π wire instead of a π wire,the part with membrane becomes smooth;with the initial state of a sudden change process and compensation as measuring states,the influence of buoyancy and membrane weight is effectively eliminated.The accuracy of experiment is improved 3% by the use of impsoved method. |
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| Keywords: | liquid surface tension coefficient stability smooth compensation law |
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