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Red (635 nm), blueish violet (445 nm), and green (520 nm) laser pointers. A laser pointer or laser pen is a (typically battery-powered) handheld device that uses a laser diode to emit a narrow low-power visible laser beam (i.e. coherent light) to highlight something of interest with a small bright colored spot.
A pen is a handheld device used to apply ink to a surface, usually paper, for writing or drawing. [1] Additional types of specialized pens are used in specific types of applications and environments such as in artwork, electronics, digital scanning and spaceflight, and computing.
Speedball is a US manufacturing company of stationery and art products, based in Statesville, North Carolina.The company was originally established as the "C. Howard Hunt Pen Company" in 1899, [4] to manufacture dip pens.
As with all Anoto pattern-based pens, the smartpen can only determine its position on the page when used with paper pre-printed with the dot pattern. Livescribe sells notebooks in several styles, and users can also print their own dot paper with a laser printer capable of at least 600 dpi. (A color or monochrome laser printer works.) [12]
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Laser marking on stainless steel A laser engraving machine A laser engraver. A laser engraving machine consists of three main parts: a laser, a controller, and a surface. [2] The laser is a drawing tool: the beam emitted from it allows the controller to trace patterns onto the surface.
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