拉脱法测量液体表面张力系数实验中影响实验误差的因素及几个被忽略问题  

The Experiment Error Factors and Several Neglected Problems in the Experiment of Liquid Surface Tension Coefficient Measurement by Tearing-off Method

作　　者：秦平力[1] 余雪里[1] 张昱[1] QIN Pingli;YU Xueli;ZHANG Yu(College of Mathematics and Science,Wuhan Institute of Technology,Wuhan 430205,China)

机构地区：[1]武汉工程大学数理学院

出　　处：《大学物理实验》2019年第4期92-95,共4页Physical Experiment of College

基　　金：湖北省教育厅教学科研究项目(2016308);武汉工程大学教学科研究项目(X2017004)

摘　　要：影响液体表面张力系数测量的因素较多。本文总结了利用拉脱法测量液体表面张力系数实验过程中对测量精度构成影响的一些主要因素,提出了几个常常被学生被忽略关键问题。很好地解释这个实验中误差较大现象,解除了学生的疑惑,加深了学生对表面张力的理解。There are many factors influencing the measurement of liquid surface tension coefficient.We summarize some main factors that influence the measurement accuracy in the experiment of measuring liquid surface tension coefficient by tearing-off method and put forward several key problems that are often ignored by students.A good explanation of the large error in this experiment has relieved students’doubts and deepened students’understanding of the surface tension.

关 键 词：拉脱法 液体表面张力 张力系数 误差因素 

分 类 号：O302[理学—力学]