Provide a lamp but also a source of energy without batteries, without sun, with only the strength of gravity, the betting here is GravityLight. GravityLight part of a humanitarian project aimed at providing solutions for energy production inexpensive, sustainable and independent African countries. The GraviLight is mainly to replace oil lamps and oil widely used and involve dependence with respect to combustible products. Wishing to go further than solutions based on batteries also associated with solar panels, batteries themselves are expensive and do not provide a sufficient lifetime, The project aims to provide a truly sustainable solution and free from coercion.
To do this, this is gravity, a natural force, consistent and accessible should allow energy production to provide not only light, but also extra energy for recharging or running a few small accessories. Thus, simply attach a weight (about 9Kg) on a ribbon attached to the lamp to initiate the creation of energy. Sliding the ribbon towards the ground gently for generating electricity, up to 30 minutes of current can thus be created in a cycle. An additional output allows an external connection, allowing some of the load devices as shown in the video. Based on the principle of voluntary funding, donations fall $ 25 to create a lamp that will be offered to African populations, and $ 50 to also receive in return. If the project was set up, ultimately, the price of production GravityLight could be reduced to $ 5.
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