一种测量液体表面张力系数的新方法

New Method of Measuring Liquid Surface Tension Coefficient

利用表面张力、浮力和重力相互平衡的简单概念,设计了一套新的液体表面张力系数测量装置。实验结果表明,使用该装置测量去离子水和自来水的表面张力系数,其结果与标准值符合得很好,与基于拉力传感器的拉脱法相比,测量精度有较大的提高。该装置具有简易、精度高、便宜等优点,能够为测量液体表面张力系数提供一种新的方法。

A set of liquid surface tension coefficient measuring new device is designed by using the simple concept of mutual balance of surface tension,buoyancy and gravity.The experimental results show that the device is used to measure the surface tension coefficient of deionized water and tap water,and the results are in good agreement with the standard result.Compared with the pull-out method based on tension sensor,the measurement accuracy is largely improved.The device has the advantages of simplicity,high precision and low cost,and can provide a new method for measuring liquid surface tension coefficient.