拉脱法测量液体表面张力系数的拓展性研究

An Expansion Study of the Pull-off Method to Measure the Surface Tension Coefficient of Liquid

对传统的拉脱法测定液体表面张力系数的实验器材进行改进,采用不同横截面积的金属环进行系列实验,以此探讨金属环横截面积与液体表面张力系数的关系。实验表明,圆环横截面积越大,测量的张力系数越大,并呈近似线性关系。

The traditional pull-off method to measure the surface tension coefficient of liquid is improved in this work,where a series of metal rings with different cross-sectional areas were designed and employed.The relationship in-between the cross-sectional area of the metal ring and the surface tension coefficient of the liquid was investigated.The experimental results show that the larger the cross-sectional area of the ring is,the larger the measured tension coefficient will be,and the relationship in-between which is approximately linear.