The cheapest of Cree's LED bulbs costs less than $10, and they're all backed by a (rather uncustomary) 10-year warranty. Perhaps most importantly, though, Cree's LED bulbs are shaped just like an ...

At the end of July, the incandescent light bulb – patented by Thomas Edison in 1880 and a common fixture in American homes for more than a century – will pass into history. By Aug. 1, commonly used ...

NEW DELHI: If you are planning to revamp your office lighting system into a cost-effective, eco-friendly and durable system, then you just have to adopt the LED bulbs. These bulbs are loaded with ...

This is a schematic diagram of a new type of filter that could revive incandescent lighting and make possible more efficient solar electricity generation. The schematic shows the technology from a ...

The color temperature of a light, measured in kelvins, is its most noticeable characteristic. A candle, at 1900 K, appears orange. Daylight, at 5500 K, is much whiter and bluer. A 5500-K bulb, however ...