介质中电磁场的动量密度和动量流密度  

Momentum density and momentum flux density of electromagnetic fields in the Media

作　　者：王洪吉[1] 

机构地区：[1]天津理工大学理学院,天津300384

出　　处：《商丘师范学院学报》2013年第12期39-41,共3页Journal of Shangqiu Normal University

摘　　要：洛仑兹力公式只适合真空情况,从洛仑兹力公式导出的电磁场的动量密度和动量流密度也仅适合真空情况,不具有一般性.本文由介质中的洛仑兹力密度公式、极化磁化方程和麦克斯维方程组,导出了介质中的动量密度、介质中的动量流密度.Lorentz force formula is only suitable for vacuum , derived from the Lorentz force formula momentum density and momentum flux density of the electromagnetic fields is only suitable for vacuum , not a general.In this paper momentum density and momentum flux density of electromagnetic fields were deduced in the media by using the density of Lorentz force formula , polarized magnetic equation and the Maxwell equations in the media .

关 键 词：洛仑兹力公式 极化磁化方程 麦克斯维方程组 电磁场的动量 

分 类 号：O421.3[理学—声学] O421.2[理学—物理]