Re: GravityLight: lighting for developing countries.
What a clever idea - a "windup clock engine" for the 21th century. Human are pretty good at energy storage, and LEDs are efficient. Assuming people are not starving this is a great way to provide a small amount of electricity. Not just for lighting but enough to charge a cell phone or radio so folks are able to connect to the wider world.
Agree with the developer's assessment of small scale solar. Until there is a more reliable method of storage it does not really solve the problem. Even in developed countries grid tie systems beat out battery backup unless you really want to live off the grid.
They wanted to raise $55K and so far they are up to $325k.
What an inspirational way to start off the new year.
What a clever idea - a "windup clock engine" for the 21th century.
Exactly, thanks to LEDs and some clever mechanics. Light for people that have none.
Being goofy as I am, I started thinking about this clock at Thomas Jefferson's home in VA. It has weights that run from the high ceiling of the first floor to the basement. You crank the weights up once a week. (if I remember correctly) I was thinking, I want to try it there. -- -- -- "Facts do not cease to exist because they are ignored." - Aldous Huxley