Electric Dipole Radiation in Free Space. The most important source of electromagnetic radiation is arguably the oscillating electric dipole. When the current density in a localized source oscillates harmonically with angular frequency , it has an electric dipole moment of the form where is the complex amplitude.

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if you can get pass the language barrier in this video, this guy does a really good job of explaining the basics of an oscillating dipole. it is one small step that may help you understand a small fraction of what is posted.

https://m.youtube.com/watch?v=r3BgnB0xnwg