Pdf [upd]: Electromagnetic Theory For Complete Idiots

Light is not a physical substance. It is an electromagnetic wave traveling through space. The electromagnetic spectrum includes many types of waves that differ only by their wavelength and frequency:

You don't need a PhD or a 500-page PDF to appreciate the magic of electromagnetism. You just need to realize that you live in a universe woven together by invisible, dancing fields of force. electromagnetic theory for complete idiots pdf