【摘要】 针对学生在测量液体表面张力系数的实验过程中常见的问题和现象进行了分析讨论。对拉脱时何时正确读取电压表示数的问题,通过理论分析和实验数据,得出了测量时应该读取液膜被拉断前电压表示数最大值和拉断后瞬间电压数值。更多还原

【Abstract】 It analyzes the common problems and phenomena in the experiment of measuring the liquid surface tension coefficient. For the confusion about the correct reading time of the value of the digital voltmeter,theoretical analysis and experiment data show that it is scientific to read the maximum value before the liquid membrane being pulled off and instantaneous value after the ring pulls off the liquid membrane.更多还原