They hold together everything from the most delicate watch to the largest bridge. The world is literally kept from coming apart by screws and bolts, and yet we don’t often give a thought to these ...

In triple-screw engines, with two screws disabled—a very remote possibility—the ship still has power of propulsion, while the arrangement permits certain economies of material and a disposition of the ...

Translating rotary motion to linear motion is a basic part of mechatronic design. Take a look at the nearest 3D-printer or CNC router — at least the Cartesian variety — and you’ll see some mechanism ...