My answer to What are the best new products or inventions that most people don't know about?
Answer by Arûn Râinâ:
GRAVITY LIGHT FOR LIGHTENING THE WORLD
The type of bulb's which needs no electric power for lightening, just a simple procedure and an innovative for making it use in the areas where it is hard for electricity to be supplied. just using a simple concept of gravitational force for lightening a bulb.
As we see in countries like INDIA, there are certain areas where it is impossible for the electricity to be reached, so that's the latest alternative for lightening the world and
Jim Reeves is a London based designer and along with Martin Riddiford he has spent four years developing a light that would provide a viable alternative to kerosene and sun-powered lamps for developing nations. Gravity Light™ works by harnessing the power of weight and gravity, it is easy to run, low-energy, battery free and also, cheaper than solar lighting. Gravity Light's creators are looking to test and begin mass-production on this innovative design, in the hopes of brightening peoples' lives when it gets dark.
JIM REEVES AT TED-TALKS