What are gear ratios? How does a fishing reel gear ratio work? What should I know? I quickly walk you through what a fishing ...

There is no complex science behind what straight-cut gears are. It's exactly as it sounds, gears with teeth that run straight out from the center of the wheel, rather than slanting in a spiral. The ...

Researchers at the University of Gothenburg have made light-powered gears on a micrometer scale. This paves the way for the smallest on-chip motors in history, which can fit inside a strand of hair.