Harnessing everyday motion to power mobile devices

Imagine powering your cell phone by simply walking around your office or rubbing it with the palm of your hand. Rather than plugging it into the wall, you become the power source. Scientists were recently working on a miniature generator based on an energy phenomenon called the piezoelectric effect, which is electricity resulting from pressure. To their surprise, it produced more power than expected.

by via Latest Science News -- ScienceDaily