A simple laboratory experiment to measure the surface tension of liquids has been proposed in this work, which is well suited for any undergraduate laboratory demonstration. Burette with modified Tate’s law has been found to return surface tension values as good as those obtained using Traube’s stalagmometer. Experimental data and error analysis show similar result accuracy. Also, a comparative study brings to notice the exactitude of drop weight method over drop number method, both from stalagmometer and burette. The rate of flow of 11–23 drops per minute has been found to be highly suitable for minimization of errors due to evaporation and satellite drop formation. Angular dependence of surface tension has been proposed numerically and validated for the respective case with the angle of 0° to deviate the least from literature value. The results obtained in this study are synchronous with the established theoretical understanding of the concept.

中文翻译：

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滴定管测定液体表面张力的准确性分析及其随时间和倾角变化的研究

在这项工作中提出了一个简单的实验室实验来测量液体的表面张力，非常适合任何本科实验室的演示。发现具有修改后的泰特定律的滴定管可返回的表面张力值与使用Traube弹力计获得的值相同。实验数据和误差分析显示出相似的结果准确性。此外，一项比较研究从石笋计和滴定管中注意到了滴重法相对于滴数法的准确性。已经发现每分钟11–23滴的流速非常适合于最大程度地减少由于蒸发和卫星滴形成而引起的误差。已经提出了表面张力的角度依赖性，并以数字方式证明了表面张力与角度的相关性，其角度为0°，与文献值的偏差最小。