LED http://northernpublicradio.org en LED Inventor Speaks on its 50th Anniversary http://northernpublicradio.org/post/led-inventor-speaks-its-50th-anniversary <p>It is a year of honors for University of Illinois Engineering and Physics Professor Nick Holonyak Jr. The inventor of the first light-emitting diode, or LED, addressed a crowd of students and faculty this week on the 50<sup>th</sup> anniversary of that innovation. Wed, 10 Oct 2012 15:09:55 +0000 WNIJ 19617 at http://northernpublicradio.org LED Inventor Speaks on its 50th Anniversary