利用电子天平探究液体表面张力系数与浓度的变化关系

Exploration of the Changing belation Between the Liquid Surface TensionCoefficient and Concentration by Use of Electronic Balance

摘要

摘要:主要利用电子天平与焦利称相结合的方式探究液体表面张力系数与浓度的变化关系,并对大学物理实验中的利用“焦利称拉脱法”测液体表面张力系数的实验进行了改进.对蔗糖溶液、氯化钠溶液在不同浓度时的表面张力系数的实际测量,其结果与理论分析符合很好,说明对该实验的改进方法是切实可行的,同时对实验中的误差产生原因进行了详细分析.

Abstract:By the combined use of the electronic balance and Jolly balance, improvement is made to the college physics textbook experiment, which uses the “Jolly balance pulling-escape method to measure the liquid surface tension coefficient. An actual measurement of the surface tension is conducted of the sucrose solution, NaCl solution, the results of which are consistent with the theoretical analysis, indicating that the improved experiment method is feasible, and at the same time a detailed cause analysis is made of the errors found in the experiment.