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  1. PEN - Penumbra, Inc.

    Yahoo Finance

    192.81-0.85 (-0.44%)

    at Tue, May 28, 2024, 4:00PM EDT - U.S. markets closed

    Delayed Quote

    • Open 193.65
    • High 194.12
    • Low 191.15
    • Prev. Close 193.66
    • 52 Wk. High 348.67
    • 52 Wk. Low 180.93
    • P/E 81.01
    • Mkt. Cap 7.47B
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  3. 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. The small width of the beam and the low power of typical laser pointers make the beam itself invisible in a ...

  4. Laser safety - Wikipedia

    en.wikipedia.org/wiki/Laser_safety

    Laser safety. Laser radiation safety is the safe design, use and implementation of lasers to minimize the risk of laser accidents, especially those involving eye injuries. Since even relatively small amounts of laser light can lead to permanent eye injuries, the sale and usage of lasers is typically subject to government regulations.

  5. Directed-energy weapon - Wikipedia

    en.wikipedia.org/wiki/Directed-energy_weapon

    The Counter-electronics High Power Microwave Advanced Missile Project (CHAMP) is a joint concept technology demonstration led by the Air Force Research Laboratory, Directed Energy Directorate at Kirtland Air Force Base to develop an air-launched directed-energy weapon capable of incapacitating or damaging electronic systems by means of an EMP (electromagnetic pulse).

  6. Scientists figure out how to make lasers nine-times ... - AOL

    www.aol.com/scientists-figure-lasers-nine-times...

    High-power fibre lasers are vital in manufacturing and defence, and becoming more so with the proliferation of cheap, unmanned aerial vehicles (drones) in modern battlefields,” said Dr Linh ...

  7. Laser ablation - Wikipedia

    en.wikipedia.org/wiki/Laser_ablation

    Laser ablation or photoablation (also called laser blasting [1] [2] [3]) is the process of removing material from a solid (or occasionally liquid) surface by irradiating it with a laser beam. At low laser flux, the material is heated by the absorbed laser energy and evaporates or sublimates. At high laser flux, the material is typically ...

  8. 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]