From: Andrew Johnson
Date: 2009-01-31 23:26:55
www.cambridge-news.c… Revealed: The light bulb which lasts for 60 years The tiny new bulbs are said to last 60 years and cost £2.A REVOLUTIONARY new bulb which slashes household lighting bills by 75 per cent has been unveiled.Dubbed “the holy grail” by scientists the bulb, created by Cambridge University scientists, uses cheap LEDs which emit brilliant light but use very little electricity and last up to 60 years.The bulbs are 12 times more efficient than conventional tungsten bulbs and three times more efficient than compact fluorescent “energy efficient” bulbs.Video bulletin – click hereAt £2 a bulb they can burn for 100,000 hours, illuminate instantly and can be dimmed, unlike energy efficient bulbs.If they were installed in every home and office they could cut the proportion of UK electricity used for lights from 20 per cent to 5 per cent a year. This is the equivalent of the power supplied by eight one gigawatt power stations.Manufacturers have begun work on production prototypes and the first units could hit shelves within two years. Gallium Nitride (GaN), is a man-made semiconductor used to make LEDs (light emitting diodes). It is routinely used in bike lights, mobile phones and camera flashes.But until now the production costs have been expensive – a single bulb would have cost £20.The new light was developed with funding from the Engineering and Physical Sciences Research Council.Scientists at the university-based Centre for Gallium Nitride have cracked how to grow GaN on silicon wafers instead of costly sapphire wafers.Prof Colin Humphreys, head of the centre, said: “This could well be the holy grail in terms of providing our lighting needs for the future. We are very close to achieving highly efficient, low cost white LEDs that can take the place of both traditional and currently available low energy light bulbs.”That won’t just be good news for the environment. It will also benefit consumers by cutting their electricity bills.”He added: “It is hoped the production of the bulbs will create a huge number of jobs in the UK. It is our belief they will render current energy efficiency bulbs redundant.” Are you interested in what’s really going on in the world, behind the facade? Then…www.checktheevidence… happened on 9/11?www.drjudywood.com/
