摘要
从利用拉脱法进行液体表面张力系数测量时误差过大入手,比较了该方法与其他方法相比存在的优劣,具体介绍了拉脱法的原理,分析了弹簧和金属丝的状态对实验结果的影响,以及拉膜过程快结束时,刻线移动的异常现象.
As the error is too large when the liquid surface tension coefficient with pull-off method is measured. We compare this method with other methods,introduce the principle of the pull-off method,analyze the impact of state of the springs and wire on the experimental results,and explaine the unusual movement of engraved line near the end of the pulling of the film.
引文
[1]马显光,翟建才.用奥氏粘度计测液体的表面张力系数[J].物理实验,1998,18(5):5-8.
[2]吕依颖,司东辉,王丽丽.球形液滴法测液体的表面张力系数[J].鲁东大学学报(自然科学版),2014,30(1):36-38.
[3]赵宏伟,李茫雪,白士刚.最大气泡压力法测液体表面张力系数的改进[J].物理实验,2007,27(7):36-38.
[4]刘子臣.大学基础物理实验(力热分册)[M].2版.天津:南开大学出版社,2005:215-218.
[5]陆改玲,计晶晶,陈霞,等.焦利弹簧的变形对液体表面张力系数测量结果的影响[J].科技创新导报,2014,33:43-44.
[6]江瑞琴,魏纪鹏.也谈金属丝的形状对液体表面张力系数测定的影响[J].物理实验,1998,18(2):46-48.