I thought this was going to be the perpetual motion lamp that won the greener gadgets competition a few years ago.
This one at least has physics that are a bit more sound, but that design didn’t look like anything that could be built for $10
Either way, if they manage to design something that actually works, they’ll still need to overcome the massive distribution challenges with Africa, but it’s definitely a worthwhile project that lots of groups are trying to tackle so I hope they succeed.