Related topics: space · nasa · launch vehicle

Imaging technique shows new details of peptide structures

A new imaging technique developed by engineers at Washington University in St. Louis can give scientists a much closer look at fibril assemblies—stacks of peptides that include amyloid beta, most notably associated with ...

Opinion: Environmental sustainability and consumption

One of the politically destructive strands of environmental advocacy criticizes material consumption and attempts to make people feel guilty for air travel and other forms of behavior that pollutes the environment.

European XFEL elicits secrets from an important nanogel

An international team at the world's largest X-ray laser European XFEL at Schenefeld near Hamburg has scrutinized the properties of an important nanogel that is often used in medicine to release drugs in a targeted and controlled ...

page 1 from 40

Engine

An engine is a mechanical device that produces some form of output from a given input. An engine whose purpose is to produce kinetic energy output from a fuel source is called a prime mover; alternatively, a motor is a device which produces kinetic energy from other forms of energy (such as electricity, a flow of hydraulic fluid or compressed air). A motor car (automobile) has a starter motor and motors to drive pumps (fuel, power steering, etc) – but the power plant that propels the car is called an engine. The term 'motor' was originally used to distinguish the new internal combustion engine -powered vehicles from earlier vehicles powered by a steam engine (as in steam roller and motor roller).

Military engines included siege engines, large catapults, trebuchets and battering rams.

This text uses material from Wikipedia, licensed under CC BY-SA