When you push or pull with a simple machine, you are applying a force and doing work. And, if you get more force out of a machine than you put into it, then that machine has a mechanical advantage.

DC machines can be classified as self-excited, separately excited, permanent magnet (PM), and brushless. Self-excited machines can be further classified as shunt, series, and compound. Compound ...

A simple machine is a mechanical device that changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called ...

Distinctive spiral patterns carved into a small jade ring show that China was using complex machines more than 2500 years ago, says a Harvard graduate student in physics. The ring was among the goods ...

Researchers have devised a new machine learning method to improve large-scale climate model projections and demonstrated that the new tool makes the models more accurate at both the global and ...

Craftsmen in ancient China were using complex machines to work jewellery long before such devices are traditionally thought to have been invented. Dr Peter Lu claims spiral grooves on 2,550-year-old ...

A high-viscosity, rigid compound, Tra-Bond 216R01 has a lap shear of 3,600 psi with a room-temperature cure and 4,500 psi with a 65°C heat cure. A high-viscosity, rigid compound, Tra-Bond 216R01 has a ...