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  2. Laser pointer - Wikipedia

    en.wikipedia.org/wiki/Laser_pointer

    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.

  3. Blue laser - Wikipedia

    en.wikipedia.org/wiki/Blue_laser

    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 ...

  4. Pointing device - Wikipedia

    en.wikipedia.org/wiki/Pointing_device

    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.

  5. This Editor-Loved At-Home Laser Hair Removal Tool Is $70 Off ...

    www.aol.com/lifestyle/editor-loved-home-laser...

    This at-home laser hair removal device our editors love is $70 during the Amazon Big Spring Sale. Here, shop the best IPL device deals on Amazon in March 2024.

  6. People Love This Amazon Laser Hair Removal Device ... - AOL

    www.aol.com/people-love-amazon-laser-hair...

    The super highly rated BoSidin Pro Laser Hair Removal Device is $100 off on Amazon. Normally priced at $390, you can currently get the device for just $290.

  7. Laser engraving - Wikipedia

    en.wikipedia.org/wiki/Laser_engraving

    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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