LEDs produce as much light as incandescent light bulbs but consume only 10 percent of the electricity and last many times longer.

VOA: standard.2009.12.13

Light-emitting diodes are small glass lamps that use much less electricity than traditional bulbs and last much longer.

VOA: special.2009.12.21

These features permitted as much air flow and natural light as possible.

VOA: special.2009.08.21

And then,when my head was well in the room, I undid the lantern just so much that a single thin ray of light fell upon the vulture eye.

VOA: special.2009.05.16

This intense heat they project in a parallel beam against any object they choose, by means of a polished parabolic mirror of unknown composition, much as the mirror of a lighthouse projects a beam of light.

VOA: special.2010.09.01

In contrast,a light bulb has much more impact in the use phase, where it's using the energy, and where you can reduce that with more efficient lighting technologies,"

VOA: standard.2009.03.30

But the silicon is what converts light into electricity, so you might think using so much less silicon would reduce the electrical output, but Atwater says that's not the case.

VOA: standard.2010.02.19