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一种用数字示波器测量液体表面张力系数的实验方法
An experimental approach for measuring liquid surface tension coefficient with digital oscilloscope
【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.
【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 digital oscilloscope,thus the liquid surface tension coefficient is obtained.
【关键词】 表面张力系数;
电感线圈;
取样电阻;
取样电压;
【Key words】 liquid surface tension coefficient; inductance turn; sampling resistance:sampling voltage;
【Key words】 liquid surface tension coefficient; inductance turn; sampling resistance:sampling voltage;
- 【文献出处】 大学物理 ,College Physics , 编辑部邮箱 ,2009年06期
- 【分类号】O4-33
- 【被引频次】8
- 【下载频次】353