The LED As We Know It Is 50 Years Old Today
Fifty years ago today, Nick Holonyak, Jr. proudly demonstrated the world’s first visible light-emitting diode (LED) at General Electric. In the process, he changed the world of lighting forever. In the early 1960s, LEDs were only capable of emitting infrared light. Nick Holonyak suggested using a mixture of gallium arsenide and gallium phosphide to create…