摘要
理论分析模拟了油滴下落时间与油滴半径的关系、油滴带电量子数与下落时间和平衡电压的变化关系,理论证实了平衡电压在150～400 V,下落时间在10～30 s附近的油滴为最佳油滴,探索提炼出油滴选取的方法和技巧,为学生理解和完成密立根油滴实验提供帮助。
The relationship between falling time of oil-drop and radius of oil drop is presented.Furthermore,number of elementary electrical charge in oil-drop as a function of the falling time under different balancing voltages is theoretically plotted.The analytical results show that the oil-drops are suitable under the condition that the balancing voltage is in the range of 150~400 V and the falling time is from 10 s to 30 s.The method of selecting oil-drop that we present in this paper could help students to understand and finish the Milikan’s oil-drop experiment.
作者
张颖涛
刘丽丽
李辉
ZHANG Yingtao;LIU Lili;LI Hui(Tianjin University of Technology,Tianjin 300384)
出处
《大学物理实验》
2019年第1期46-49,共4页
Physical Experiment of College
基金
天津理工大学教学基金(YB17-40)
关键词
油滴带电量子数
平衡电压
下落时间
number of elementary electrical charge in oil-drop
falling time
balancing voltage
