* The GravityLight uses a sand-filled sack to yank a rope through a tiny generator to power an LED light
* It's makers retrieve a single yank can keep the light departing representing up to 30 minutes
* They hope to distribute 1,000 open to underprivileged communities in India and Africa
A British company hopes to bring stimulating light to 1.5billion fill with who live sour the grid with an incredible stimulating light to facilitate is powered by gravity.
The GravityLight uses a sack of sand to increasingly yank a case of rope through a dynamo means which generates electricity to power an LED light.
A three-second yank on the rope to raise the sack will keep the LED bulb running representing up to 30 minutes, its makers retrieve.
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My Comment: This is just the first generation prototype .... I can only imagine what subsequent innovations will bring.
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