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Clean Energy & Sustainable Resource use
{{contributorFullName}} | 28-07-2017
Combining kinetic and potential energy, GravityLight works by connecting an elevated weight — filled with rocks or sand — to a pulley system that slowly powers a generator as the weight falls to the ground.
A typical kerosene lamp is made by taking an empty bottle or tin can, putting a wick in the middle, filling it with fuel and lighting. Using kerosene for lighting is extremely inefficient, dangerous and expensive, and it has extensive health and environmental drawbacks. Our mission is to eliminate kerosene lamps and their damaging effects. GravityLight is an innovative device that generates light with the lift of a weight. It takes just a few seconds to lift the weight that powers GravityLight which provides 20 minutes of light as it descends. No batteries mean that GravityLight can be stored indefinitely and there's no need to charge in advance, it's ready when you need it. As the energy generated from the device is completely self sustained, GravityLight pays for itself within months of switching from a kerosene lamp.
"GravityLight is powered by the lift of a weight.
As the weight falls it turns a gear train, driving the motor that powers the LEDs.
GravityLight doesn't need batteries or sunlight and costs nothing to run. It takes seconds to lift the weight that powers GravityLight, creating 20 minutes of light on its descent"
Gravity light provides clean energy and thus prevents from the harmful gases from a kerosene lamp.
Over 1.2 billion people globally have no access to electricity and millions more have an unreliable supply. Gravity light provides them with clean energy
Since the gravity light doesn't use any inputs, the costs can be recovered within months from shifting from a kerosene lamp
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