' this is ">100% efficiency" in the same sense that "turned off the LED's electric power, set it on fire, then measured the fire's light output" is ">100% effic

' this is ">100% efficiency" in the same sense that "turned off the LED's electric power, set it on fire, then measured the fire's light output" is ">100% efficiency".' It's absolutely a misleading headline. But that last part is a little harsh. The power is awfully low, but someday a partly-heat-powered LED might not be 100% useless.