The Gravitylight

[Faline]

The inventive light requires no fuel or alternative power source. Simply pick up the weight that is attached to the small light and let it go. As gravity pulls the bag of weight down, a small generator is turned to power the light, offering up to 30 minutes of light for literally three seconds of work. That is, picking up the weight.

http://www.indiegogo.com/projects/282006

[kingspade]

amazing

[icheerthebull]

wow that really is amazing

[Arsedestroyer]

i have to say amazing as well, what a great idea!

[Jere]

brilliant

[pankajsharma]

boring shit

[kellyhound]

very smart.

[johnleeknoefler]

The Africans will pay for the lights with ???? Mud bricks? Cow patties?

[PTSD Is My Life]

A great idea, but big companies will stall it as much as they can after all if they have something that generates "free" light they wont be buying kerosene, batteries and the likes.

Another concern, from experience with working with those who need it the most is the cost.
Small as the purchase cost is, it will be almost impossible for these people to find enough money to cover the estimated cost of three months kerosene...its easier to get a few pennies together than a few pounds...