Oleg vladimirovich losev biography of william hill

The Light Emitting Diode (LED) is 50 years old. Well, kind of

It’s certainly 50 years since Nick Holonyak, working at GEC’s Syracuse, New York facility, developed what is considered the first LED capable of generating visible light.

Oleg vladimirovich losev biography of william hill

Holonyak’s LED was also the first to be in form ready for commercial usage. He wrote up his work and sent it off to Applied Physics Letters on 17 October The journal published the work in December under the headline ‘Coherent (visible) Light Emission from GaAs xPx Junctions’.

However, Holonyak’s work followed that of Gary Pittman and Robert Baird who, in , observed the emission of infrared light by Gallium Arsenide - the GaAs in Holonyak’s headline - and, on the back of it, applied for and gained a patent - US number 3,, - for the infrared LED.

Indeed, while Holonyak was working on his visible LED, so too were Robert Hall, also of GEC but employed at a different location; IBM’s Marshall Nathan; and MIT’s Robert Rediker.

All four sent papers to journ