News tagged with input power

Laser diodes versus LEDs

Solid-state lighting based on light-emitting diodes (LEDs) is the most efficient source of high color quality white light. Nevertheless, they show significant performance limitations such as the "efficiency ...

Nov 11, 2013
4.8 / 5 (6) 0

Boosting heat transfer with nanoglue

(Phys.org)—A team of interdisciplinary researchers at Rensselaer Polytechnic Institute has developed a new method for significantly increasing the heat transfer rate across two different materials. Results ...

Dec 04, 2012
5 / 5 (7) 0 | with audio podcast

LED's efficiency exceeds 100%

(PhysOrg.com) -- For the first time, researchers have demonstrated that an LED can emit more optical power than the electrical power it consumes. Although scientifically intriguing, the results won’t ...

Mar 05, 2012 report
4.2 / 5 (78) 60 | with audio podcast

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Rising anger as Nicaragua canal to break ground

As a conscripted soldier during the Contra War of the 1980s, Esteban Ruiz used to flee from battles because he didn't want to have to kill anyone. But now, as the 47-year-old farmer prepares to fight for ...

Dec 21, 2014
4 / 5 (8) 25

Rolling lab tracks methane to its source

McHenry Township, Lycoming County. Equipped with a gray box, a map and an SUV, Thomas Lauvaux and a team from Penn State's Department of Meteorology has been at it for hours, taking measurements and racking ...

Dec 19, 2014
5 / 5 (3) 0

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