真空中以光速运动的单极元件
Unipolar components travelling at the speed of light in vacuo
摘要：
我们描述了一种物理情形，其中电磁波包的电场的时间积分不为零。更具体地，傅立叶频谱的非振荡分量，即由在$ω=0$处评估的电场的傅立叶变换产生的分量，可以与在以光速在自由空间中行进的局部单极电磁脉冲下的区域相关联。
英文摘要：
We describe a physical situation where the time integral of the electric field of an electromagnetic wave packet is not zero. More specifically, the non-oscillating component of the Fourier spectrum, i.e. the component resulting from the Fourier transform of the electric field evaluated at $ω=0$, can be associated with the area under a locally unipolar electromagnetic pulse that travels in free space at the speed of light.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
