LEDs are bright lights for the future


A few weeks ago I mentioned that lights based on light-emitting diodes (LEDs) use less energy than tungsten filament lights or fluorescent lights. LEDs also longer lasting. And, the cost of LEDs has fallen dramatically over the last 15 years, and is continuing to fall.

However, those are not the only differences between LEDs and the older technologies. LEDs offer a variety of new and improved capabilities, some of which were never practical, or indeed possible, with older lighting systems.

For instance, LED lights can be designed for comprehensive electronic control. LEDs are based on sol...

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