Machine
A machine is a tool containing one or more parts that uses energy to perform an intended action. Machines are usually powered by mechanical, chemical, thermal, or electrical means, and are often motorized. Historically, a power tool also required moving parts to classify as a machine. However, the advent of electronics has led to the development of power tools without moving parts that are considered machines.[1]
A simple machine is a device that simply transforms the direction or magnitude of a force, but a large number of more complex machines exist. Examples include vehicles, electronic systems, molecular machines, computers, television, and radio.
Contents
1 Etymology
2 History
3 Types
3.1 Mechanical
3.1.1 Simple machines
3.1.2 Engines
3.2 Electrical
3.2.1 Electrical machine
3.2.2 Electronic machine
3.2.3 Computing machines
3.3 Molecular machines
4 Machine elements
4.1 Mechanisms
4.2 Controllers
5 Impact
5.1 Industrial Revolution
5.2 Mechanization and automation
5.3 Automata
6 See also
7 References
8 Further reading
Etymology
The word machine derives from the Latin word machina,[1] which in turn derives from the Greek (Doric μαχανά makhana, Ionic μηχανή mekhane "contrivance, machine, engine",[2] a derivation from μῆχος mekhos "means, expedient, remedy"[3]).
A wider meaning of "fabric, structure" is found in classical Latin, but not in Greek usage.
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