May 2003
LEDs vs. the Lightbulb
With their longer lifetimes and higher efficiencies, light-emitting diodes will transform the illumination industry-and save billions in energy costs.
By David Talbot
It's a sunny day on the campus of the University of California, Santa Barbara, but little light penetrates the labs and offices of Shuji Nakamura. Shades sheathe the windows in part because, Nakamura says, "I worry about unknown people around here-that they will include a spy."
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Massachusetts Institute of Technology