As early as the 19th century, there have been cases of people being electrically charged or magnetized, resulting in an odd electromagneticeffect on the objects around them.
其实早在19世纪就出现过一些身负电荷或电磁的人，他们周边的事物都会被古怪的电磁效应所影响。
2
In the pulsing core, the coils are preferably wound in the same direction to maximize the additive effect of the electromagnetic field therein.
在脉冲的核心，是最好的线圈缠绕在同一方向，以最大限度地电磁场在其中加性效应。
3
The effect on this restoration caused by the deviation of the electromagnetic coefficients from the "perfect lens" conditions was discussed.