Tremont Electricity shows off a product based on a 180-year-old discovery that lets you generate electricity while walking or running
Charging your electronic gadgets by walking? Sounds like the sort of thing you used to do with self-winding watches. But Tremont Electric has developed the nPower PEG which generates electricity and refills its battery from your movement: simply put it vertically into a backpack or other bag and as you walk, it charges. At $160 - to go on sale later this year in the US - it's a straightforward idea for harvesting what would otherwise be surplus energy. (It works by moving a magnet through a coil - which of course generates an electric current, as demonstrated by Michael Faraday in 1831 - but adds some patented technology.
Here's Jessica Davis, director of PR and sustainability for Tremont, explaining how it works. It really is pretty neat - and sustainable, indeed.
Source: http://www.guardian.co.uk/technology/blog/2011/jan/05/ces-npower-walking-energy
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