I agree that this is more interesting. Some basic background is at http://en.wikipedia.org/wiki/Light-emitting_diode#White_light http://en.wikipedia.org/wiki/

I agree that this is more interesting. Some basic background is at http://en.wikipedia.org/wiki/Light-emitting_diode#White_light http://en.wikipedia.org/wiki/Light-emitting_diode#White_ligh...