Chapter 29 Maxwell,s Equations and Electromagnetic Waves They are contradict. To make them coordinate we need to consider the continuity of current. o dd +o dqd(Sσ)cd S □-dt dt dt dt do dd do D=o D dt dt dt B dd dyp y=SDⅠ=S dt dt 麦克斯韦假设电场中某一点位移电流密度等 于该点电位移矢量对时间的变化率Chapter 29 Maxwell’s Equations and Electromagnetic Waves They are contradict. To make them coordinate, we need to consider the continuity of current. t S t S t q I d d d d( ) d d c   = = = t j d d c  = D =  t t D d d d d  = t Ψ t D I S d d d d Ψ = SD c = = + + + + + - - - - - I t D d d  D  c j c j − + I B A 麦克斯韦假设 电场中某一点位移电流密度等 于该点电位移矢量对时间的变化率