Researchers Identify Cause Of LED 'Efficiency Droop' Researchers have discovered the mechanism behind a plague of LED light bulbs: a flaw called "efficiency droop" that causes LEDs to lose up to 20 percent of their efficiency as they are subjected to greater electrical currents.
Study: Online Tools Accelerating Earthquake-Engineering Progress A new study has found that online tools, access to experimental data and other services provided through "cyberinfrastructure" are helping to accelerate progress in earthquake engineering and science.
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