http://en.wikipedia.org/wiki/Erwin_Schr%C3%B6dinger
http://www.optcorp.com/edu/articleDetailEDU.aspx?aid=2470
_ http://www.youtube.com/watch?v=SnFOjpAyjl4
http://www.youtube.com/watch?v=SnFOjpAyjl4
_ Schrodinger Equation - Step wise Derivation Part 2/3
http://www.youtube.com/watch?v=30xUIOTJmN4