Power Your Own Workout. GO, dy-na-MO!
Posted in Science & Technology on Sep 3rd, 2008
When you were kids, did you have that cool attachment on your bike - a dynamo - that powered your bike lamp with no battery? All the kids who had them would go whirring by in the dark, the dynamo spinning against the side of the wheel, and their lights glowing brighter and brighter, the [...]
