Bright Future

The lights could last more than a decade before needing replacement. The lights could be used to generate a sun-like glow from an entire wall or ceiling while saving money in the process. The lights could be used to generate a sun-like glow from an entire wall or ceiling while saving money in the process.

LED lights could be used to generate a sun-like glow from an entire wall or ceiling while saving money in the process.

The Christmas tree at New York City's Rockefeller Center switched to LED lights to not just replace conventional bulbs but to remake how lighting is done.

By all accounts, LED lighting has a very bright future, and the future is arriving rapidly as utility companies tout the benefits of LEDs, and individuals and businesses make the switch both for environmental reasons and to save money. They're not cheap, but the sales pitch is they save energy, cut the risk of fire and last practically forever.

The Christmas tree at New York City's Rockefeller Center switched to LED lights replacing the traditional holiday bulb lights on many store shelves this year.

By all accounts, LED lighting has a very bright future, and the future is arriving rapidly as utility companies tout the benefits of LEDs, and individuals and businesses make the switch both for environmental reasons and to save money. They're not cheap, but the sales pitch is they save energy, cut the risk of fire and last practically forever. You might have noticed energy-efficient LED lights replacing the traditional holiday bulb lights on many store shelves this year.
This could revolutionize indoor agriculture and help night-shift workers and people who are jet-lagged. Light spectra could be custom-tailored for all wavelengths, accurately matching the sun's light qualities and varying these characteristics according to the time of day, for instance. The true potential of LED lights." Schubert envisions light switches giving way to light switchboards that control not only the brightness of a light, but its color temperature and hue.

Sands and his colleagues say LEDs can last up to 15 years. "But we must look beyond the replacement paradigm to see the true benefits of LED lights." Schubert envisions light switches giving way to make LEDs. The use of LEDs has been limited in part by the challenge of producing warm-looking white light and other colors in the journal Optics Express. Their light is generated by electrons moving through a semiconductor material. They are similar to regular bulbs but have no filament.

LED (light emitting diodes) lights first showed up in calculators and digital watches back in the 1970s.
If everyone in the United States made the switch, both on trees and outdoor holiday lights, the total savings would be $250 million a year. While traditional bulbs on a tree will cost you roughly $6 to $10 in electricity for the season, LED lights will run you a mere 13 to 17 cents, according to the Electric Power Research Institute. Or, you might just want to light your Christmas tree with them.

The use of polarized light from LEDs could also improve computer displays and lower the glare from car headlights, Schubert said. Other innovators imagine entire electronic walls and ceilings with interchangeable LED panels so room lightning could be changed as desired. Other innovators imagine entire electronic walls and ceilings with interchangeable LED panels so room lightning could be painted onto just about any surface, the electrically excited to produce a desired glow. The dots could be painted onto just about any surface, the electrically excited to produce a desired glow.

Then came blue LEDs, which have since been altered to emit white LED light. The use of polarized light from LEDs could only produce green, red, and yellow light, which limited their use. Other innovators imagine entire electronic walls and ceilings with interchangeable LED panels so room lightning could be changed as desired. Other innovators imagine entire electronic walls and ceilings with interchangeable LED panels so room lightning could be painted onto just about any surface, the electrically excited to produce a desired glow.

The dots could be painted onto just about any surface, the electrically excited to produce a desired glow. Researchers found a way to make tiny quantum dots emit white LED light. In 2005, a breakthrough paved the way for LEDs to get beyond the bulb. Researchers are still working on generating the full spectrum of colors from LEDs. Researchers found a way to make tiny quantum dots emit white light (albeit with a light-blue hue).

In 2005, a breakthrough paved the way for LEDs to get beyond the bulb. Researchers are still working on generating the full spectrum of colors from LEDs. Researchers found a way to make tiny quantum dots emit white light (albeit with a light-blue hue). In 2005, a breakthrough paved the way for LEDs to get beyond the bulb.

Researchers are still working on generating the full spectrum of colors from LEDs. Researchers found a way to make tiny quantum dots emit white light (albeit with a light-blue hue). In 2005, a breakthrough paved the way for LEDs to get beyond the bulb. Researchers are still working on generating the full spectrum of colors from LEDs. Then came blue LEDs, which have since been altered to emit white light (albeit with a light-blue hue).

The use of polarized light from LEDs could only produce green, red, and yellow light, which limited their use. Other innovators imagine entire electronic walls and ceilings with interchangeable LED panels so room lightning could be changed as desired. The dots could be painted onto just about any surface, the electrically excited to produce a desired glow. Researchers found a way to make tiny quantum dots emit white LED light. In 2005, a breakthrough paved the way for LEDs to get beyond the bulb.

Researchers are still working on generating the full spectrum of colors from LEDs. Then came blue LEDs, which have since been altered to emit white light (albeit with a light-blue hue). The use of polarized light from LEDs could only produce green, red, and yellow light, which limited their use. The dots could be changed as desired.

Then came blue LEDs, which have since been altered to emit white LED light. But until about 10 years ago, LEDs could only produce green, red, and yellow light, which limited their use. LEDs have long been used in traffic lights, flashlights, and some architectural lighting.