Energy-Efficient LEDs Developed
New energy-saving LED lightbulb that lasts 60 years has been developed by scientists at Cambridge University
Cambridge University researchers have developed cheap, light-emitting diode (LED) bulbs that produce brilliant light but use very little electricity. They will cost about $3.00 and last up to 60 years.
The bulbs are 12 times more efficient that conventional tungsten bulbs and three times more efficient than compact fluorescent "energy efficient" bulbs. The new LED bulbs can burn for 100,000 hours and they illuminate instantly and can be dimmed, unlike current energy efficient bulbs.
The LED bulbs use gallium nitride, a man-made semiconductor used to make light-emitting diodes. LEDs are already in use in bicycle lights, mobile phones, camera flashes and Christmas lights because they are relatively cheap due to their size and brightness compared to normal bulbs.
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