Nick Holonyak Jr., John Bardeen Endowed Chair Emeritus in Electrical and Computer Engineering and Physics at the University of Illinois, passed away this week. He is credited with the first LED light in in 1962, which emitted a red light. In 2019, he was the grand marshal of the Festival of Lights parade.

To honor his life, both the State Farm Center and Willis Tower were glowing red last night.

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Top photo from University of Illinois Facebook page.

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