Good piece.
http://sciencefriday.com/segment/10/12/2012/fifty-years-ago-a-bright-idea.html
Happen to be setting up my houseplant 120w chinese led when the piece played.
http://sciencefriday.com/segment/10/12/2012/fifty-years-ago-a-bright-idea.html
Happen to be setting up my houseplant 120w chinese led when the piece played.