The LED's creator, Nick Holonyak Jr., passes away at age 93.

Nick Holonyak Jr. passed away on September 18 in Urbana, Illinois. He

created the first usable visible-spectrum light-emitting diode, or LED, in 1962,

which proved to be a breakthrough that has since had countless practical

applications, including lightbulbs, mobile phones, TVs, and microscopic

surgical equipment that can save lives. He was 93. His death was reported but

no cause of death was given by the University of Illinois at Urbana-

Champaign, where he spent 50 years conducting research, teaching, and

rising to the rank of professor of electrical and computer engineering and physics.

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