用改进型约利弹簧秤测量液体表面张力系数  

Measuring surface tension coefficent of liquid by using improved Jolly spring balance

作　　者：徐燕[1] 张晓英[1] 林馨丹 黄年伟 高梓涵 戴本书 XU Yan;ZHANG Xiaoying;LIN Xindan;HUANG Nianwei;GAO Zihan;DAI Benshu(School of Science,Huzhou University,Huzhou 313000,China)

机构地区：[1]湖州师范学院理学院,浙江湖州313000

出　　处：《物理实验》2023年第5期15-17,24,共4页Physics Experimentation

基　　金：2020年国家级大学生创新创业训练计划项目(No.202010347031)。

摘　　要：针对传统约利弹簧秤测量液体表面张力系数时易出现升降过程运行不稳定、液膜提前破裂、仪器内部的细绳易打滑或断裂等问题,对该仪器的核心装置——升降机的结构进行改进,以螺纹结构替代传统的带轮结构.实验测试结果表明:改进后的实验装置可以克服上述缺点,且操作方便、实验误差小、重复性好.In the experiment of measuring surface tension coefficent of liquid by using the traditional Jolly spring balance,it was easy to have some defects,such as unstable operation in the lifting process,liquid film breaking in advance,and the esay-slippling or breaking thin rope inside the instrument.In view of the above defects,the lift structure was improved,the traditional belt wheel structure was replaced by thread structure,and the relevant experimental research was carried out.The experimental results showed that the improved experimental device could overcome the above defects,and the operation was convenient,the experimental error was small,the repeatability was good.

关 键 词：约利弹簧秤 螺纹结构 表面张力系数 

分 类 号：O4-33[理学—物理]