摘要
依据电磁场的相对论变换,本文计算了填充有介质的电容器和螺绕环在特定方向运动时电磁场的动量。计算结果表明该电磁场的动量不独是质量与运动速度的乘积,它还与电容器和螺绕环的运动方向及填充介质的相对介电常数和相对磁导率有关,从而揭示了电磁场在定量认识上的一点特殊性。
According to relativistic transformation of electromagnetic fields, calculations for momentum of electromagnetic fields for capacitor and toroid, both filled with medium and moving along special directions, are given.The results show that the momentum of electromagnetic fields is not merely a simple product of mass and velocity, but also relates to the moving direction of capacitor and toroid, the relative permittivity and the relative permeability of the media, thus a little specificity of the fields is revealed in the terms of quantitative cognition.
作者
苑新喜
YUAN Xin-xi(School of Mathematics and Physies, China University of Geosciences, Wuhan 430074, China)
出处
《电气电子教学学报》
2019年第1期65-68,共4页
Journal of Electrical and Electronic Education
关键词
动量
电磁场
电容器
螺绕环
momentum
electromagnetic fields
capacitor
toroid
