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- 100PCS Green Laser...US eBay$725.00
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- MF-1900 Handheld Laser ...ScripHessco$125.00
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- 1Pc Personalized Pen,...Temu.cn$1.14$1.17
- 9900 Miles USB...US eBay$9.48
- 990 Miles Beam Green ...US eBay$7.99
- Strong Beam Green Laser...US eBay$7.99
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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 blue laser emits electromagnetic radiation with a wavelength between 400 and 500 nanometers, which the human eye sees in the visible spectrum as blue or violet. [1] Blue lasers can be produced by: direct, inorganic diode semiconductor lasers based on quantum wells of gallium (III) nitride at 380-417nm [2] [3] or indium gallium nitride at 450 ...
Laser engraving. Laser marked electronic part. Laser engraving is the practice of using lasers to engrave an object. Laser marking, on the other hand, is a broader category of methods to leave marks on an object, which in some cases, also includes color change due to chemical/molecular alteration, charring, foaming, melting, ablation, and more. [1]
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Signo RT1 Retractable Gel Ink Pen, Micro Point 0.38mm. For those of us who love a good color coordination, an arsenal of colored pens is a necessity. This multi-pack contains a great selection and ...
Discrete pointing devices. directional pad – a very simple keyboard. Dance pad – used to point at gross locations in space with feet. Soap mouse – a handheld, position-based pointing device based on existing wireless optical mouse technology. Laser pen – can be used in presentations as a pointing device.