Nick Holonyak Jr., Pioneer of LED Lighting, Is Dead at 93He invented a visible red-light diode. His 41 patents also included lasers that enabled DVD and CD players.http://rss.nytimes.com/services/xml/rss/nyt/Technology.xmlNYT > Technologyhttps://static01.nyt.com/images/misc/NYT_logo_rss_250x40.pngTechnology124Sam Roberts
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