CAJ | 학술논문

任何物理实验不可避免会产生实验误差，一般实验误差呈正态分布，有的实验结果偏大，有的实验结果偏小，这样实验误差才正常。而用拉脱法测量液体表面张力系数的实验误差大小主要取决于操作是否合理，操作准确无误，误差就小。所以老师应该在学生操作之前讲清楚如何拉膜以及拉膜过程中一定要做到玻璃套筒上的刻度线，与反光镜面上刻度线以及玻璃套筒上的刻度线的镜像线三线合一，否则就会产生比较大的实验误差。让学生在操作之前就知道出现误差真正的原因，在实验操作过程中尽量避免出现操作的误差。
임하물리실험불가피면회산생실험오차，일반실험오차정정태분포，유적실험결과편대，유적실험결과편소，저양실험오차재정상。이용랍탈법측량액체표면장력계수적실험오차대소주요취결우조작시부합리，조작준학무오，오차취소。소이로사응해재학생조작지전강청초여하랍막이급랍막과정중일정요주도파리투통상적각도선，여반광경면상각도선이급파리투통상적각도선적경상선삼선합일，부칙취회산생비교대적실험오차。양학생재조작지전취지도출현오차진정적원인，재실험조작과정중진량피면출현조작적오차。
There will inevitably be experimental errors in any physical experiment, while the general experimental errors are normally distributed, and some experimental results are large, and some experimental results are small, which is normal. The degree of experimental errors in measuring liquid surface tension coefficient using tearing-off method depends mainly on whether the operation is reasonable and accurate. Therefore, before stu-dents' operation, the teacher should clearly explain how to pull the film, that it should reach the scale line on the glass sleeve in the process of pulling the film, and that the scale line on the glass sleeve should coincide with its mirror line as well as the scale line on the reflective mirror, otherwise it will produce a relatively large experimental error. The teacher should let students know the real reasons of errors before the operation, so as to avoid operation er-rors as far as possible in the experiment process.