Learn how to correct for low power factor. Specifically learn how to correct for low power factor due to reactive components in a system (this is called the displacement power factor). By determining the reactive power of the circuit, you can determine the component value that will use the same quantity but opposite type of reactive power to move the power factor closer to 1.

David Williams
www.elen.ca
Intro and outro include excerpts from interviews with Richard Feynman (via BBC TV archives) and Claude Shannon (via AT&T tech archives). Outro music is Hexbug Racer by Rachael Pauls