A $5 Lamp Powered Solely by Gravity
Some people get excited by F1 racing, the Bugatti Veyron, or stuff like the latest iPhone, telling you they are technology enthusiasts or engineering fans.<p>But if you ask me, it's always at the low end of things - like this project - where the really inventive, exciting engineering happening.<p>Sure, something like an F1 car is impressive after a fashion, but considering the price, yeah, well, it <i>better</i> knock my damn socks off or it just looks stupid. Unlimited budgets do not make for impressive engineering, really.<p>Making something that is truly, spectacularly useful like this for $5 ot $10? That is genuinely impressive.