大学物理 ›› 2009, Vol. 28 ›› Issue (6): 18-18.

• 著者文摘 • 上一篇    下一篇

一种用数字示波器测量液体表面张力系数的实验方法

穆秀家 刘智新 陈军   

  1. 山东农业大学物理实验中心,山东泰安271018
  • 出版日期:2009-06-20 发布日期:2009-06-20

An experimental approach for measuring liquid surface tension coefficient with digital oscilloscope

  • Online:2009-06-20 Published:2009-06-20

摘要: 将弹簧作为电感线圈,与取样电阻构成RL串联电路.在正弦交流信号激励下,用数字示波器测量取样电压与作用力的关系,从而测得液体的表面张力系数.

关键词: 表面张力系数, 电感线圈, 取样电阻, 取样电压

Abstract: A spring as an inductance turn and a sampling resistance are made up of a RL series circuit. Under the prompting of alternating current, the relation of the acting force and the sampling voltage is measured with a dig- ital oscilloscope, thus the liquid surface tension coefficient is obtained.

Key words: liquid surface tension coefficient, inductance turn, sampling resistance, sampling voltage

中图分类号: 

  • O552.4