Two London designers enjoy developed a gravity-powered lamp that could sell for as limited as £3,bringing light to remote regions in developing countriesThe problem of bringing light to remote parts of the developing world has been tackled in the past with everything from solar-powered lamps to wind-up devices and rechargeable batteries all of which require relatively expensive kit or physical effort by the user.
But two London-based designers enjoy now developed a light source that operates on the stuff that surrounds you – earth, rocks or sand – with the helping hand of gravity.
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Source: theguardian.com