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For other uses of the term Machine, see Machine (disambiguation)

A machine is any mechanical or organic device that transmits or modifies energy to perform or assist in the performance of tasks. It normally requires some energy source ("input") and accomplishes some sort of work.

People have used mechanisms and machines to amplify their abilities since before written records were available. Generally these devices decrease the amount of force required to do a given amount of work, alter the direction of the force, or transform one form of motion or energy into another.

The mechanical advantage of a simple machine is the ratio between the force it exerts on the load and the input force applied. This does not entirely describe the machine's performance, as force is required to overcome friction as well. The mechanical efficiency of a machine is the ratio of the actual mechanical advantage (AMA) to the ideal mechanical advantage (IMA). Functioning physical machines are always less than 100% efficient.

Modern power tools, automated machine tools, and human-operated power machinery complicate the definition of "machine" greatly. Machines used to transform heat or other energy into mechanical energy are known as engines.

Contents 1 Simple machines or mechanical components 2 Clock 3 Compressors and Pumps 4 Internal combustion engine 5 External combustion engine 6 Linkages 7 Turbine 8 Airfoil 9 Rocket 10 Computing machines 11 Automated machines 12 Biological machines

Simple machines or mechanical components

• Gear
• Lever
• Pulley
• Wedge
• Spring
• Wheel and Axle
• Bearings
• Belts
• Seals
• Chains

Clock

• Atomic clock
• chronometer
• Pendulum clock
• Quartz clock

Compressors and Pumps

• Archimedes screw
• Eductor-jet pump
• Hydraulic ram
• Tuyau
• Vacuum pump

Internal combustion engine

• Gasoline engine
• Diesel engine
• Four-stroke cycle
• Two-stroke cycle
• Wankel engine

External combustion engine

• Steam engine
• Stirling engine

Linkages

• Pantograph
• Peaucellier-Lipkin

Turbine

• Gas turbine
• Jet engine
• Steam turbine
• Water turbine
• Wind generator, Windmill (Air turbine)

Airfoil

• Sail
• Wing
• Rudder
• Flap
• Damper
• Propeller

Rocket

Computing machines

• Calculator
• Analog computer
  • Wind tunnel
• Digital computer
• Turing machine

Automated machines

Biological machines

• Virus, Bacterium
• Cell (biology)
• Plant and animal
• Human being
• The mind - controversially

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Athletics and Recreation	Camping equipment | Playground | Sports | Sports equipment
The Arts and Language	Communication | Graphics | Music technology | Visual technology
Business and Information	Construction | Information technology | Manufacturing | Machinery | Mining | Telecommunication
Defense	Bombs | Guns and Ammunition | Weapons technology
Domestic / Residential	Domestic appliances | Domestic technology | Food products and production
Engineering	Agricultural engineering | Bioengineering | Biochemical engineering | Biomedical  engineering | Chemical engineering | Civil engineering | Computer engineering | Electrical engineering | Electronics engineering | Mechanical engineering | Petroleum engineering | Software engineering
Health	Biomedical engineering | Biotechnology | Health technologies | Pharmaceuticals
Travel and Trade	Aerospace | Aerospace engineering | Motor vehicles | Space technology | Transport

This article is based on the article "Machinery" from Wikipedia - the free encyclopedia created and edited by online user community. This article is distributed under the terms of GNU Free Documentation License. Here you find the list of authors of this article. The article can only edited within Wikipedia. Edit this article in Wikipedia.