| Laser machine welding is the joining of two pieces of | | | | 1960, but was descended from work done by Albert |
| material, usually metal, but often these days plastics, | | | | Einstein in 1916. However, the laser itself is such a |
| using a laser beam. A laser is a single phase, or | | | | recent development that the use of laser machine |
| coherent beam of light often seen in science fiction | | | | welding is a fairly recent technological |
| movies, but the development of the laser beam and | | | | innovation.Lasers have found applications in many |
| its application in laser machine welding allows for | | | | areas since their invention. Modern medicine utilizes |
| advancements in precision welding using this | | | | lasers for surgery, having realized the ability to |
| high-energy device, which creates heat when it | | | | perform less invasive surgical procedures than in the |
| strikes a surface. Laser machine welding is used for | | | | past. Also the fine and precise nature of lasers has |
| steam tracing and inspection, for surface heat | | | | led surgeons to use them for such delicate |
| treating, cutting with heat and other precision | | | | operations as eye surgery. In common practice many |
| applications.The laser, which stands for light | | | | people today use laser pointers, especially in the |
| amphlication by stimulated emission of radiation, emits | | | | classroom. Marksmen use laser sights on rifles. |
| photons in a narrow beam. Laser light usually in | | | | Computer users use laser printers for output rather |
| monochromatic, meaning that it emits light of a single | | | | than old-fashioned methods, and lasers are used for |
| wavelength. Common light emits incoherent light, | | | | motion detection and security, among many dozens if |
| which goes in all directions over the spectrum. The | | | | not hundreds of other applications. |
| first working laser was developed by Hughes labs in | | | | |