Long passed are the days of manila rope and wooden block and tackles. Now, we puff out our chest with high-efficiency, ball bearing pulleys and auto-locking carabiners. Much like cellphones, it seems ...

In the world of rope rescue, we use mechanical advantage systems really for two reasons. The first being a force increasing tool and the second, a means of reducing the weight of a load during a ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

A gear close gearA gear is a mechanical part with teeth that interlock with another gear or belt to transfer motion and power while changing speed, or direction in a mechanical system. is a special ...

Introduction Before the industrial age people largely had to rely on muscle power to move and lift heavy objects. Simple machines such as pulleys, levers and ramps made it easier for humans to lift ...

High-energy battery electrodes can break apart during operation. Conventional rope-and-pulley systems have inspired the development of a polymer that holds electrodes together at the molecular scale, ...

The retrievable redirect using a revolver rig and pulley provides arborists with an efficient method for managing rope angles, reducing friction, and improving overall work positioning while climbing.

Have you ever seen a flag being raised, or wondered how a mechanical clock works? Let’s take a look at some of the simple mechanisms that they use. Pulleys and gears. When a flag is raised, it will ...