液体表面张力系数测定  

Measurement of liquid surface tension coefficient

作　　者：王国余[1] 张欣[2] 

机构地区：[1]江苏大学理学院,江苏镇江212013 [2]上海应用技术学院数理教学部,上海200235

出　　处：《传感器技术》2003年第7期52-54,共3页Journal of Transducer Technology

摘　　要：利用硅压阻式力传感器测量液体的表面张力系数,改变了传统测量微小拉力的方法,实现了非电量的电测。在测量了多种液体的表面张力系数后,又测量了不同质量分数的乙醇溶液的表面张力系数,研究了混合溶液的表面张力系数与溶液质量分数的关系。实验方法简便易行,直观可见,既提高了实验的准确度,又有助于物理概念的理解。Measuring the liquid surface tension coefficient by piezoresistive force sensor can change the traditional measuring method and achieve nonelectric testing.The surface tension coefficient of various liquid and ethanol water mixtures at room temperature are measured.The relationship between surface tension coefficient and concentration of such mixtures is studied.The experimental method is convenient and audiovisual.It not only improves accuracy,but also benefits to the comprehension for physics concept.

关 键 词：液体表面张力 系数测定 硅压阻式力传感器 溶液质量 灵敏度 

分 类 号：O552.421[理学—热学与物质分子运动论] TP212[理学—物理]