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  2. Laser cutting - Wikipedia

    en.wikipedia.org/wiki/Laser_cutting

    Laser cutting is a technology that uses a laser to vaporize materials, resulting in a cut edge. While typically used for industrial manufacturing applications, it is now used by schools, small businesses, architecture, and hobbyists. Laser cutting works by directing the output of a high-power laser most commonly through optics.

  3. CNC router - Wikipedia

    en.wikipedia.org/wiki/CNC_router

    Large 5-axis moving table CNC router Drawing of a Tabletop DIY - CNC router. Silver: Iron, Red: Stepper Motors, Light Brown: MDF, Dark Brown: Hard Wood. A computer numerical control (CNC) router is a computer-controlled cutting machine which typically mounts a hand-held router as a spindle which is used for cutting various materials, such as wood, composites, metals, plastics, glass, and foams.

  4. Fiber laser - Wikipedia

    en.wikipedia.org/wiki/Fiber_laser

    Fiber laser. A fiber laser (or fibre laser in Commonwealth English) is a laser in which the active gain medium is an optical fiber doped with rare-earth elements such as erbium, ytterbium, neodymium, dysprosium, praseodymium, thulium and holmium. They are related to doped fiber amplifiers, which provide light amplification without lasing .

  5. AOL Mail

    mail.aol.com

    You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563.

  6. Music box - Wikipedia

    en.wikipedia.org/wiki/Music_box

    A music box ( American English) or musical box ( British English) is an automatic musical instrument in a box that produces musical notes by using a set of pins placed on a revolving cylinder or disc to pluck the tuned teeth (or lamellae) of a steel comb.

  7. LaserDisc - Wikipedia

    en.wikipedia.org/wiki/LaserDisc

    The LaserDisc ( LD) is a home video format and the first commercial optical disc storage medium, initially licensed, sold and marketed as MCA DiscoVision (also known simply as "DiscoVision") in the United States in 1978. Its diameter typically spans 30 cm (12 in). Unlike most optical-disc standards, LaserDisc is not fully digital, and instead ...

  8. Free-electron laser - Wikipedia

    en.wikipedia.org/wiki/Free-electron_laser

    A free-electron laser ( FEL) is a fourth generation light source producing extremely brilliant and short pulses of radiation. An FEL functions much as a laser but employs relativistic electrons as a gain medium instead of using stimulated emission from atomic or molecular excitations. [1] [2] In an FEL, a bunch of electrons passes through a ...

  9. Sentinel-class cutter - Wikipedia

    en.wikipedia.org/wiki/Sentinel-class_cutter

    The Sentinel-class cutter, also known as the Fast Response Cutter due to its program name, is part of the United States Coast Guard's Deepwater program. [ 2 ] [ 3 ] [ 4 ] At 154 feet (46.8 m), it is similar to, but larger than, the 123-foot (37 m) lengthened 1980s-era Island-class patrol boats that it replaces.