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GravityLight: lighting for the developing countries [Innovation]
posted November 23 2013 6:21.45 by spic0m

The idea behind the Gravity Light Project is both simple and inventive: produce a light that is powered by gravity.

While looking for an affordable replacement for kerosene lamps in Africa, Martin Riddiford and Jim Reeves broke their requirements down into two key components: the LED itself and the means of charging the light. As the actual light obviously had to stay, the two men focused their efforts on the issue of charging. Eventually, they hit upon the idea to use gravity and designed a battery-free light that harnessed gear ratios and potential energy; finally taking batteries out of the picture.


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