Exposure to the light of white LED bulbs, it turns out, suppresses melatonin 5 times more than exposure to the light of high pressure sodium bulbs that give off an orange-yellow light. "Just as ...

Exposure to the light of white LED bulbs, it turns out, suppresses melatonin 5 times more than exposure to the light of High Pressure Sodium bulbs that give off an orange-yellow light.

And in addition to standard options like on/off control and scheduling, this clever LED bulb offers a circadian-rhythm mode that automatically switches the white light color temperature throughout ...

Exposure to the light of white LED bulbs, it turns out, suppresses melatonin 5 times more than exposure to the light of High Pressure Sodium bulbs that give off an orange-yellow light.

Lumens measure how much light is given off by a bulb ... Some white LEDs can emit a "cooler" light that's more on the blue side of the spectrum than incandescent bulbs. "Daylight" or "natural ...

the lighting giant is releasing an inexpensive LED light bulb that also happens to be as flat as a pancake. Could this be the bulb that finally endears consumers to LEDs? Some background on the ...

Here's a hint: that's a Philips LED bulb in action. There's no two ways around it: many potential buyers have been turned off ... light goes through the phosphor and is emitted as a shade of white.

We knew the day was coming when the lights would go out, and by that, I mean the light ... and off-white, the blacks cavernous — everything wrong, unnatural stained and impure.” LED bulbs ...

White light from Bowers' lumpy new bulb. Credit: Vanderbilt University The new device gives off a warm, yellowish-white light that shines twice as bright and lasts 50 times longer than the ...

Halogen: These give off a bright, white light, similar to natural daylight. Great for task lighting. They also use 10-20 percent less energy than an incandescent bulb. When discussing appearance ...