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Despite being an enduring symbol of innovation, the incandescent light bulb isn't really all that innovative any more. In fact, the design hasn't changed very much at all since Thomas Edison introduced it in 1879.As well as looking very similar to their 1879 counterparts, today’s incandescent light bulbs still generate light in an extremely wasteful way, by converting as little as 10 per cent of t …

The skylines of our cities are changing. Not only are buildings getting taller, they’re also becoming brighter and more colourful thanks to low energy LED lights. We look at 10 buildings from around the world that light up the night sky using LEDs. 1 – The Agbar Tower. This 38 storey skyscraper in Barcelona, Spain opened in June 2005, and has 30,000 offices – 3,210 technical faci …

Outdoor lighting can be a problem. Not only can it be expensive, but picking the right option for your garden brings its own headaches too. Then you have to think about waterproofing. It goes on. Today though, we’re looking at why you should be using LEDs, and how you can make some cheap, yet stylish lights for your garden that won’t cost you the earth. So why should you use …

Get an eye-full of these crazy light paintings.The coloured lines in these images are actually the light trails left behind by Roombas fitted with coloured LED lights.The craze appears to have started with a group of German photographers at the Braunschweig University of Technology who, thanks to a stroke of genius, or just out of boredom (who knows!), decided to attach coloured LED lights to seve …