摘要
提出了自由空间条件下磁力线速度的测量实验。指出磁力线速度可以通过电磁感应速度测量,与电磁波速度无关。测量结果表明,系统中Z轴方向的磁力线速度在10倍光速以上。基于经典麦克斯韦方程的有限元数值求解结果与实验测量结果一致性较好。该实验将有助于人们进一步理解麦克斯韦方程,并提供了一条从经典电磁学角度理解相速度、群速度超光速的新途径。
We propose experimental method about the measurement of magnetic line of force velocity in free space. According to Faraday＇s law of induction, the velocity of the magnetic lines can be measured by magnetic dipole antenna, and it is orthogonal to the electromagnetic wave vector direction. Experimental results show that induction velocity is 10 times faster than light in Z axis direction. Theoretical analysis based on finite element method （FEM） is good agreement with the experimental results. This experiment will contribute to a better understanding of the Maxwell equations, and provide a novel way to understand- ing superluminal phase velocity and the group velocity from classical electromagnetism view.
出处
《中国传媒大学学报（自然科学版）》
2013年第2期64-67,73,共5页
Journal of Communication University of China：Science and Technology
基金
河南省科技攻关计划(122102210290)资助
关键词
磁力线速度
有限元
超光速
magnetic line of force velocity
FEM
superluminal
