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This article is about devices that perform tasks. For other uses, see Machine (disambiguation).

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A machine is any device that uses energy to perform some activity. In common usage, the meaning is that of a device having parts that perform or assist in performing any type of work. A simple machine is a device that transforms the direction or magnitude of a force without consuming any energy. The word "machine" is derived from the Latin machina.¹

1 Usage
2 Types of machines and other devices
3 Machines in Education and Art
4 Notes
5 References

Usage

Historically, a device required moving parts to be classified as a machine; however, the advent of electronics technology has led to the development of devices without moving parts that are considered machines—the computer being the most obvious example.¹

"Engines" are machines that convert heat or other forms of energy into mechanical energy. Internal combustion engines for example use the expansion of gas caused by heat from an exothermic chemical reaction.

Machines are ubiquitous in a wide variety of industrial, commercial, residential and transportation applications. For instance, those employing hydraulics are useful in manufacturing, construction.

Another defenition mght be: Machine is a device that allows you to do work in a way that is easier or more effective. So basically, that means that it lets you work in a simpler manner; but that still doesn't mean that you do any less work eavnthought the work goes by faster.

Reference for the defenition above: Prentice Hall Science Explorer 7

Types of machines and other devices

**Types of machines and other devices**
Simple machines	Inclined plane, Wheel and axle, Lever, Pulley, Wedge, Screw
Mechanical components	Axle, Bearings, Belts, Bucket, Fastener, Gear, Key, Link chains, Rack and pinion, Roller chains, Rope, Seals, Spring, Wheel,
Clock	Atomic clock, Chronometer, Pendulum clock, Quartz clock
Compressors and Pumps	Archimedes screw, Eductor-jet pump, Hydraulic ram, Pump, Tuyau, Vacuum pump
Heat engines	External combustion engines	Steam engine, Stirling engine
Heat engines	Internal combustion engines	Reciprocating engine
Linkages	Pantograph, Peaucellier-Lipkin
Turbine	Gas turbine, Jet engine, Steam turbine, Water turbine, Wind generator, Windmill (Air turbine)
Aerofoil	Sail, Wing, Rudder, Flap, Propeller
Electronics	Transistor, Diode, Capacitor, Resistor, Inductor
Miscellaneous	Robot, Vending machine, Wind tunnel, Check weighing machines, Riveting machines

Machines in Education and Art

Gunderson Do-All Machine - an artistically presented network of more than 30 interconnected machines whose internal mechanisms are exposed to provide viewers with an understanding of their operating principles. The kinetic sculpture was designed by Mark Gunderson to function as an educational yet entertaining mechanical tutorial.

Notes

^ ^a ^b The American Heritage Dictionary, Second College Edition. Houghton Mifflin Co., 1985.

References

Oberg, Erik; Franklin D. Jones, Holbrook L. Horton, and Henry H. Ryffel (2000). in ed. Christopher J. McCauley, Riccardo Heald, and Muhammed Iqbal Hussain: Machinery's Handbook, 26th edition, New York: Industrial Press Inc.. ISBN 0-8311-2635-3.

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