May 2000
Light Fantastic
Blue LEDs light up consumer market
By David Wilson
The incandescent light bulb is a hot technology in one sense-it wastes 90 percent of its energy in heat. Now, experts say, the 122-year reign of the tungsten filament may be coming to an end. Taking its place is gallium nitride, a super material that's set to make billion-dollar waves in consumer markets from lighting to home entertainment.
 | Select from the choices above to read the entire article. |
Customer Service
|
Magazine Services
|
Subscribe
|
Other
|
Advertise
|
Download
Massachusetts Institute of Technology