【摘要】 文章用一种简单且操作性强的方法对拉脱法测量液体表面张力系数实验中常认为可以忽略的水膜的重力和金属框受到的浮力进行了修正。以测量30℃下蒸馏水的表面张力系数为例,将修正前后的液体表面张力系数数据进行了对比研究。更多还原

【Abstract】 This paper describes a simple and easy-to-operate experimental method to account for the weight of the water film and the buoyant force exerted to the metal frame in the pull-off measurement of liquid surface tension coefficient,where both factors have been ignored.We apply this method to the measurement of the surface tension coefficient of distilled water at 30 °C and compare the results with and without correction.更多还原