Jim Murray's explanation and experiments of Tesla's work

These are long videos, but well worth the watch. So break out the popcorn, pencils and paper. Lots of paper.

Overview

credit : thefreethoughtproject

Credit : http://teslaspowermagnification.com

The site has a video where he describes all the math involved.

Credit : emediapress

Eric Dollars on Harmonics

Youtube Eric Dollars he has 21 videos there.