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+ - The LED is 50 years old->

Submitted by
BoxRec
BoxRec writes "The light-emitting diode has brightened our lives for half a century — from lighting up the city streets at night, to decorating Christmas trees each December.
The LED started life in October 1962, as a single red illumination in a General Electric research lab in New York state.
Prof Nick Holonyak Jr from the University of Illinois, takes a look back at how it all began with his invention of the first practical visible-spectrum light-emitting diode."

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The LED is 50 years old

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