PDA

View Full Version : Scientists invent 2 energy saving lightbulb that last for 60 years



Gingersnap
01-29-2009, 12:48 PM
Scientists invent 2 energy saving lightbulb that last for 60 years
A 2 energy-saving lightbulb that lasts for 60 years has been developed by scientists at Cambridge University.

By Louise Gray, Environment Correspondent
Last Updated: 2:09PM GMT 29 Jan 2009

The researchers have designed a bulb that is three times more energy efficient than today's best offer and can cut lighting bills by 75 per cent.

The bulbs are made using Gallium Nitride (GaN), a man-made substance used in LEDs (light emitting diodes). It is routinely used in bike lights, mobile phones and camera flashes.

But until now the production costs have been too expensive for widespread use in homes and offices - a single bulb would have cost 20.

However, using funding from the Engineering and Physical Sciences Research Council, the researchers found a cheaper technique to help manufacture the bulbs. Manufacturers have already begun work on production prototypes and the first units could hit shelves within two years.

Professor Colin Humphrey, head of the centre, said: "This could well be the holy grail in terms of providing our lighting needs for the future."

The bulbs are 12 times more efficient that conventional tungsten bulbs and three times more efficient than compact fluorescent "energy efficient" bulbs.

They can burn for 100,000 hours and they illuminate instantly and can be dimmed, unlike energy efficient bulbs.

Interesting.

Telegraph (http://www.telegraph.co.uk/earth/earthnews/4375077/Scientists-invent-2-energy-saving-lightbulb-that-last-for-60-years.html)

biccat
01-29-2009, 12:54 PM
There's been lots of attempts at making LED-bulbs. I wouldn't have a problem changing to them, assuming the color and illumination pattern issues have been resolved as well as the cost issue.

enslaved1
01-29-2009, 01:03 PM
So what happens to the company that makes these wonder bulbs? Fire up the plant every fifty years or so?

Gingersnap
01-29-2009, 01:08 PM
So what happens to the company that makes these wonder bulbs? Fire up the plant every fifty years or so?

It's still a supply and demand situation. We're just used to planned obsolescence. They would still sell bulbs but they wouldn't sell as many. I don't buy a piano every ten years but they still make pianos.