Wind turbines

The scientific definition of a "machine" (derived from the Latin machina) is any device that transmits or modifies energy. In common usage, the meaning is that of devices having parts that perform or assist in performing any type of work (cf Concise Oxford Dictionary). Concise Oxford English Dictionary (until 2002 officially entitled The Concise Oxford Dictionary, and widely known by the abbreviation COD Machines normally require some energy source ("input") and always accomplish some sort of work ("output"). In Physics, mechanical work is the amount of Energy transferred by a Force. Devices with no rigid moving parts can be considered tools. A broader definition of a tool is an entity used to interface between two or more domains that facilitates more effective action of one domain upon the other

A machine is anything that makes work easier.

People have used mechanisms to, or transform one form of motion or energy into another. In Physics, motion means a constant change in the location of a body

The mechanical advantage of a simple machine is the ratio between the force it exerts on the load and the input force applied. In Physics and Engineering, mechanical advantage (MA is the factor by which a mechanism multiplies the force put into it In Physics, especially Mechanics, a simple machine is a mechanical device that changes the direction or magnitude of a Force. A ratio is an expression which compares quantities relative to each other This does not entirely describe the machine's performance, as force is required to overcome friction as well. Friction is the Force resisting the relative motion of two Surfaces in contact or a surface in contact with a fluid (e The mechanical efficiency of a machine is the ratio of the actual mechanical advantage (AMA) to the ideal mechanical advantage (IMA). In Physics, mechanical efficiency is the effectiveness of a machine and is defined as \text{Efficiency} = \frac{\text{Mechanical Advantage}}{\text{Velocity In Physics and Engineering, mechanical advantage (MA is the factor by which a mechanism multiplies the force put into it In Physics and Engineering, mechanical advantage (MA is the factor by which a mechanism multiplies the force put into it Functioning physical machines are always less than 100% efficient.

Modern power tools, automated machine tools, and human-operated power machinery are tools that are also machines. Automation ( Ancient Greek: = self dictated) roboticization or industrial automation or Numerical control is the use of Control systems Machines used to transform heat or other energy into mechanical energy are known as engines. In Physics, heat, symbolized by Q, is Energy transferred from one body or system to another due to a difference in Temperature An engine is a mechanical device that produces some form of output from a given input

Compound machines are composed of more elementary machines called simple machines, such as the wedge and the pulley. In Physics, especially Mechanics, a simple machine is a mechanical device that changes the direction or magnitude of a Force. A pulley (also called a sheave or block) is a Wheel with a groove between two Flanges around its Circumference Machines are considered simple machines if they perform their action in one movement. These devices may also be used to support industrial applications, although devices entirely lacking rigid moving parts are not commonly considered machines. For other uses of this term see Industry (disambiguation An industry (from Latin industrius, "diligent industrious" Hydraulics are widely used in heavy equipment industries, automobile industries, marine industries, aeronautical industries, construction equipment industries, and earthmoving equipment industries. Marine is an Umbrella term. As an adjective it is usually applicable to things relating to the Sea or Ocean, such as Marine biology, Marine Aeronautics (from Greek aero which means air or sky and nautis which means sailor i Engineering vehicles, known by the other terms construction Equipment, earth movers heavy equipment or just plain equipment are machines specifically designed to execute Engineering vehicles, known by the other terms construction Equipment, earth movers heavy equipment or just plain equipment are machines specifically designed to execute

Types of machines and other devices

References

1. Oberg, Erik; Franklin D. In Physics, especially Mechanics, a simple machine is a mechanical device that changes the direction or magnitude of a Force. This article deals with the physical structure For related terms see Canal inclined plane, Cable railway, Funicular, or Fixed-wing The wheel and axle is a Simple machine. The traditional form as recognised in 19th century textbooks is as shown in the image A pulley (also called a sheave or block) is a Wheel with a groove between two Flanges around its Circumference A wedge is a triangular shaped tool a compound and portable Inclined plane, and one of the six classical Simple machines It can be used to separate Look up SpecialSearch/{{lcscrew}}}}}|{{{2|{{{1|screw}}}}}} This is the page for mechanical Gears For other uses see Gear (disambiguation For the gear-like device used to drive a roller chain see Sprocket A rope is a length of Fibers twisted or Braided together to improve strength for pulling and Connecting. A spring is a flexible elastic object used to store mechanical Energy. A wheel is a circular device that is capable of rotating on its axis facilitating movement or transportation whilst supporting a load ( Mass) or performing labour in machines An axle is a central shaft for a rotating Wheel or Gear. In some cases the axle may be fixed in position with a bearing or Bushing A bearing is a device to permit constrained relative motion between two parts typically rotation or linear movement A Belt is a looped strip of flexible material used to mechanically link two or more rotating shafts A mechanical seal is a device which helps join systems or mechanisms together by preventing leakage (e Roller chain or bush roller chain is the type of chain most commonly used for transmission of mechanical power on Bicycles Motorcycles A chain is a series of connected links. This article is about the literal physical chain A rack and pinion is a pair of Gears which convert rotational motion into linear motion A fastener is a Hardware device that mechanically joins or affixes two or more objects together A key is a device which is used to open a lock. A typical key consist of two parts the blade, which slides into the Keyway of the lock and distinguishes Circadian Locomotor Output Cycles Kaput, or Clock is a gene which encodes proteins regulating Circadian rhythm. An atomic clock is a type of Clock that uses an Atomic resonance Frequency standard as its timekeeping element A chronometer watch is a Watch tested and certified to meet certain precision standards A pendulum clock is a Clock that uses a Pendulum, a swinging weight as its Timekeeping element A quartz clock is a Clock that uses an Electronic oscillator that is regulated by a Quartz crystal to keep time A gas compressor is a mechanical device that increases the Pressure of a Gas by reducing its Volume. For information on Wikipedia project-related discussions see WikipediaVillage pump. The Archimedes' screw, Archimedean screw, or screwpump is a Machine historically used for transferring water from a low-lying body of water into Irrigation An eductor-jet Pump or Aspirator can be used for draining areas which may contain Combustible fluids (which could ignite if exposed to the workings of a A hydraulic ram is a cyclic water pump powered by Hydropower. For information on Wikipedia project-related discussions see WikipediaVillage pump. A tuyau ( French for 'pipe' is an ancient invention for producing cool dry compressed air from a flow of Water. A vacuum pump is a device that removes gas molecules from a sealed volume in order to leave behind a partial Vacuum. A heat engine is a physical or theoretical device that converts Thermal energy to mechanical output An external combustion engine (EC engine is a Heat engine where an (internal working Fluid is heated by combustion of an external source through the Engine A steam engine is a Heat engine that performs Mechanical work using Steam as its Working fluid. A Stirling engine is a closed-cycle regenerative Heat engine with a Gaseous working fluid The internal combustion engine is an engine in which the Combustion of Fuel and an Oxidizer (typically air occurs in a confined space called a A reciprocating engine, also often known as a piston engine, is a Heat engine that uses one or more reciprocating Pistons to convert A mechanical linkage is a series of rigid links connected with joints to form a closed chain or a series of closed chains A pantograph (from Greek roots παντ- 'all every' and γραφ- 'to write' from their original use for copying writing is a mechanical linkage connected in a The Peaucellier-Lipkin linkage (or Peaucellier-Lipkin cell) invented in 1864 was the first linkage capable of transforming rotary motion into perfect straight-line A turbine is a rotary Engine that extracts Energy from a Fluid flow A gas turbine, also called a combustion turbine, is a rotary Engine that extracts energy from a flow of Combustion gas A steam turbine is a mechanical device that extracts Thermal energy from pressurized Steam, and converts it into useful mechanical work A water turbine is a rotary Engine that takes energy from moving water A wind generator is a device that generates electrical power from wind energy A windmill is a machine that is powered by the energy of the wind An airfoil (in American English) or aerofoil (in British English) is the shape of a Wing or blade (of a Propeller, rotor A sail is any type of surface intended to generate Thrust by being placed in a Wind &mdashin essence a vertically-oriented Wing. WING "ESPN 1410" is a commercial AM radio station in Dayton Ohio operating with 5000 watts at 1410 kHz with studios offices and transmitter located on David A rudder is a device used to steer a Ship, Boat, Submarine, Hovercraft, or other conveyance that move through a fluid (generally air or A propeller is essentially a type of fan which transmits power by converting Rotational motion into Thrust for propulsion of a vehicle such as an A calculator is device for performing mathematical calculations distinguished from a Computer by having a limited problem solving ability and an interface optimized for interactive A computer is a Machine that manipulates data according to a list of instructions. An analog computer (spelt analogue in British English is a form of Computer that uses continuous physical phenomena such as electrical mechanical Electronics refers to the flow of charge (moving Electrons through Nonmetal conductors (mainly Semiconductors, whereas electrical In Electronics, a transistor is a Semiconductor device commonly used to amplify or switch electronic signals Dioden2jpg|thumb|right|150px|Figure 2 Various semiconductor diodes A capacitor is a passive electrical component that can store Energy in the Electric field between a pair of conductors |- align = "center"| |width = "25"| | |- align = "center"| || Potentiometer |- align = "center"| | | |- align = "center"| Resistor| | An inductor is a passive electrical component designed to provide Inductance in a circuit Foundations of modern biology There are five unifying principles A virus (from the Latin virus meaning Toxin or Poison) is a sub-microscopic infectious agent that is unable The Bacteria ( singular: bacterium) are a large group of unicellular Microorganisms Typically a few Micrometres in length bacteria have The cell is the structural and functional unit of all known living Organisms It is the smallest unit of an organism that is classified as living and is often called Plants are living Organisms belonging to the kingdom Plantae. DNA computing is a form of Computing which uses DNA, Biochemistry and Molecular biology, instead of the traditional silicon-based Computer Human beings, humans or man (Origin 1590–1600 L homō man OL hemō the earthly one (see Humus A robot is a mechanical or Virtual Artificial agent In practice it is usually an electro-mechanical system which by its appearance or movements A vending machine is a machine that provides various snacks beverages and other products to consumers A wind tunnel is a research tool developed to assist with studying the effects of air moving over or around solid objects A checkweigher is an automatic machine for checking the Weight of packaged commodities 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. Machinery's Handbook for machine shop and drafting-room a reference book on machine design and shop practice for the mechanical engineer draftsman toolmaker and . ISBN 0-8311-2635-3.