Gravity Light – Runs Entirely By Gravity
Yes, it sounds like magic, and the idea is ingenious.
Watch these two videos about the gravity lamp and its story:
Gravity Light – no pollution and free of cost
The Weight Of Light
How it works
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.
Designed For Impact
Over 1.2 billion people globally have no access to electricity and millions more have an unreliable supply. Instead they use dangerous, polluting and expensive kerosene lamps for light.
The GravityLight Foundation
The GravityLight Foundation aims to improve the lives of people without electricity by providing clean, safe and affordable lighting, and further:
NowLight, their latest model and new crowdfunding campaign: