Hi guys, I've been taking graduate EE courses. Must say I have been spending a lot of time in other textbooks and glossaries trying to fill in my blanks in probability theory, and still very very foggy on some core EE principles, namely fourier analysis. I have purchased a book on signals and systems that I intend to go over, and I also would like to learn circuitry and understand that better. It's amazing to me when we go back to wave propagation with Maxwell how back at home I feel as a physics guy, but as as soon as we get into Impedance and then log-normal I'm a fish out of water. Any advice on some core classes/ textbooks to brush up on so that way I truly feel as though I am mastering Electrical Engineering. Thanks guys! PS Why does a single pulse in time spread over time when sent over a band-limited channel?