| 基于智能手机和Matlab的居家悬滴法表面张力测量实验 |
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| 引用本文： | 陆怿璠,金子程,任文艺.基于智能手机和Matlab的居家悬滴法表面张力测量实验[J].大学物理,2023,42(1):48-54. |
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| 作者姓名： | 陆怿璠 金子程 任文艺 |
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| 作者单位： | 西北农林科技大学 理学院，陕西 杨凌712100 |
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| 基金项目： | 大学生创新创业项目（S202010712075；X202110712338）、西北农林科技大学教育教学改革项目（JY2103158）、光电教指分委2019年“新工科建设与实践”教育教学研究项目（gdxgk13）以及教育部产学合作协同育人项目（202102153030）资助. |
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| 摘 要： | 本文基于智能手机和Matlab软件设计了一种居家环境下可实现的悬滴法水滴表面张力测量实验.借助智能手机拍照功能获得水滴图像，利用Matlab进行边缘检测及计算，从而得出表面张力系数.对于不同清晰度的情况提出了对应的分析和处理方法，实验结果表明该方法稳定可靠.为后疫情时代开展居家大学物理实验教学提供了一个典型案例.
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| 关 键 词： | 表面张力 智能手机 居家实验 Matlab边缘检测 悬滴法 |
Pendant drop method to measure surface tension of waterdrops based on smartphone and Matlab at home |
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| LU Yi-fan,JIN Zi-cheng,REN Wen-yi.Pendant drop method to measure surface tension of waterdrops based on smartphone and Matlab at home[J].College Physics,2023,42(1):48-54. |
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| Authors: | LU Yi-fan JIN Zi-cheng REN Wen-yi |
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| Institution: | College of Science, Northwest A&F University, Yangling, Shaanxi 712100, China |
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| Abstract: | An experiment of measuring surface tension of water droplets based on pendant drop method is developed by using a smartphone and Matlab software that can be used at home. The surface tension coefficient is calculated by taking a photo of water droplets with a smartphone and then using Matlab to recognize and calculate the edges. For various clarity cases, appropriate analysis and processing methods are presented, and testing results show that the method is stable and trustworthy. It is a typical case of post-epidemic experimental teaching of university physics at home. |
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| Keywords: | surface tension smartphone home physics experiment Matlab edge detection pendant drop method |
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