laser machining!

laser machining

Comprehensive Analysis

1) "Laser" -- As to laser machining 1la·ser Pronunciation: 'lA-z&r Function: noun Usage: often attributive Etymology: light amplification by stimulated emission of radiation 1 : a device that utilizes the natural oscillations of atoms or molecules between energy levels for generating a beam of coherent electromagnetic radiation usually in the ultraviolet, visible, or infrared regions of the spectrum 2 : something resembling a laser beam in accuracy, speed, or intensity <threw a laser into the end zone> <a laser stare> Pronunciation Symbols A laser (acronym for light amplification by stimulated emission of radiation) is an optical source that emits photons in a coherent beam. The back-formed verb lase means "to produce laser light" or "to apply laser light to".[1] In analogy with optical lasers, a device which produces any particles or electromagnetic radiation in a coherent state is also called a "laser", usually with indication of type of particle as prefix (for example, atom laser.) In most cases, "laser" refers to a source of coherent photons, i.e. light or other electromagnetic radiation. Laser light is typically near-monochromatic, i.e., consisting of a single wavelength or color, and emitted in a narrow beam. This contrasts with common light sources, such as the incandescent light bulb, which emit incoherent photons in almost all directions, usually over a wide spectrum of wavelengths. Laser action is explained by the theories of quantum mechanics and thermodynamics. Many materials have been found to have the required characteristics to form the laser gain medium needed to power a laser, and these have led to the invention of many types of lasers with different characteristics suitable for different applications. The laser was proposed as a variation of the maser principle in the late 1950s, and the first laser was demonstrated in 1960. Since that time, laser manufacture has become a multi-billion dollar industry, and the laser has found applications in fields including science, the defense industry, industry, medicine, and consumer electronics. Experiment using a (likely argon) laser. (US military) For lasers in fiction, see also raygun. 1 Physics 2 History 2.1 Prehistory: Einstein 2) "Machining" -- As to laser machining 2machine Function: transitive verb Inflected Form(s): ma·chined; ma·chin·ing : to process by or as if by machine; especially : to reduce or finish by or as if by turning, shaping, planing, or milling by machine-operated tools - ma·chin·abil·i·ty also ma·chine·abil·i·ty /-"shE-n&-'bi-l&-tE/ noun - ma·chin·able also ma·chine·able /-'shE-n&-b&l/ adjective Pronunciation Symbols A lathe is a common tool used in machining. Machining is an occupation or hobby or a class of material-working processes that involves using a power-driven machine tool, such as a lathe, milling machine or drill, to shape metal. Machining is a part of the manufacture of almost all metal products. Some plastic parts are machined. A person who specializes in machining is called a machinist. A room, building, or company where machining is done is called a machine shop. 1 Machining operations 2 Machining as a hobby 3 Machining in manufacturing industries 4 See also 5 External links Most machining operations can be divided into those that remove metal from an item, and those that form metal in an item. Often an unfinished workpiece will need to have some parts removed or scraped away in order to create a finished product. For example, a lathe is a machine tool that generates circular sections by rotating a metal workpiece, so that a cutting tool can peel metal off, creating a smooth, round surface. A drill or punch press can be used to remove metal in the shape of a hole. Other tools that may be used for various types of metal removal are milling machines, saws, and grinding tools. Many of these same techniques are used in woodworking. Metal can be formed into a desired shape much more easily than materials such as wood or stone, especially when the metal is heated. A machinist may use a forging machine to hammer or mold a hot metal workpiece into a desired shape. Dies or molds may be used if the metal is soft enough, or under high pressures. A press is used to flatten a piece of metal into a desired shape. Advanced machining operations might use electrical discharge, elecr..." 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