News tagged with leds

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LED efficiency puzzle solved by theorists

Researchers at the University of California, Santa Barbara, say they've figured out the cause of a problem that's made light-emitting diodes (LEDs) impractical for general lighting purposes. Their work will help engineers ...

Apr 19, 2011 4.6 / 5 (22) 16 | with audio podcast

Shedding light on risks of LEDs

If you haven't taken down your Christmas lights yet, do it very carefully. Those modern, light-emitting diode bulbs marketed as safe, environmentally preferable alternatives to traditional lights actually ...

Mar 01, 2011 3.4 / 5 (14) 22

Nanoworld in color

Lights off – projector on. Lecture theaters, conference halls and seminar rooms currently have to be darkened if the speaker wants to project a presentation on screen. Unfortunately, the attention of ...

Jan 21, 2011 4.2 / 5 (5) 4