New light bulb to last more than 20 years

Light bulbs that are said to last for more than two decades while consuming very little energy may go on sale later this year.

Using light-emitting diodes (LEDs) instead of filaments, the bulbs are meant to produce as much light as a 100-watt incandescent alternative.

There are so many benefits of LEDs: they can be smaller, brighter; it is one of those rare technologies where the trial has shown it performs better than the lighting systems it is replacing but, at the same time, uses less energy.

Traditional light bulbs pass electricity through a filament, which results in energy being released as both heat and light, leading to a lot of heat being wasted.

But LEDs are made from a semiconductor material, and are able to emit much more light for the same amount of electricity. Learn more here.

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