The microscopic origin of efficiency droop in LEDs

Light-emitting diodes—or LEDs, as they are commonly known—have been slowly replacing incandescent light bulbs in applications ranging from car taillights to indicators on electronics since their invention in the 1960s.

LED-lighting influences the activity of bats

The widespread replacement of conventional bulbs in street lighting by energy-saving light-emitting diodes (LEDs) has considerable influence on bats as urban nocturnal hunters. Opportunistic bats lose hunting opportunities ...

Study illuminates big performance gap for car headlights

There may be a reason why people have trouble seeing while driving at night, and it's not their eyesight. A new rating of the headlights of more than 30 midsized car models gave only one model a grade of "good."

Do energy-efficient LED lights cause unexpected ecological damage?

Planet earth runs on light energy. Light energy from the sun powers photosynthetic processes in plants and different wavelengths of light cue these plants to flower, move their leaves, and grow taller. These same cues influence ...

Review: New light bulbs offer alternative to LEDs and CFLs

For consumers who are still bemoaning the phaseout of incandescent light bulbs, hate the harsh CFLs and can't figure out LEDs, another option may be on the horizon - a new kind of bulb is slated to hit store shelves this ...

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