摘要
针对实验教学中平行板电容器测量真空电容率偏差较大的问题,提出了平行板电容器的修正模型.实验对极板的非平行性进行了研究,结合了边缘效应和分布电容.修正后的模型提高了真空电容率的测量精度,其偏差下降至0.6%以下.
A modified model of parallel plate capacitor is proposed to reduce the large deviation between the measured and the theoretical value of vacuum dielectric constant.By studying the non-parallelism of the plate and considering the edge field effect and distributed capacitance,the measurement accuracy of the vacuum dielectric constant is improved,and the deviation is reduced to less than 0.6%.
作者
梁燕
孙煜婷
刘凡凡
刘一平
岑剡
LIANG Yan;SUN Yu-ting;LIU Fan-fan;LIU YI Ping;CEN Yan(Physics Enperimen t Teaching Cent er,Univerii ty of Science and Technology of China,Hefei 230026,China;PhysicsTeaching Laboratory,Department of Physics,Fudan University,Shanghai 200433,China)
出处
《物理实验》
2020年第4期22-26,共5页
Physics Experimentation
基金
中国科学技术大学教学研究项目(No.2017xjyxm074)。
关键词
电容率
非平行板电容器
边缘效应
分布电容
dielectric consta_nt
non-parallel effect
edge effect
distributed capacita_nce
