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  1. PEN - Penumbra, Inc.

    Yahoo Finance

    191.34-1.47 (-0.76%)

    at Wed, May 29, 2024, 4:00PM EDT - U.S. markets closed

    Delayed Quote

    • Open 190.51
    • High 193.18
    • Low 189.52
    • Prev. Close 192.81
    • 52 Wk. High 348.67
    • 52 Wk. Low 180.93
    • P/E 80.73
    • Mkt. Cap 7.42B
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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. List of Walmart brands - Wikipedia

    en.wikipedia.org/wiki/List_of_Walmart_brands

    Equate is a brand used by Walmart for consumable pharmacy and health and beauty items, such as shaving cream, skin lotion, over-the-counter medications, and pregnancy tests. Before its takeover by Walmart, the formerly independent Equate brand sold consumer products at both Target and Walmart at lower prices than those of name brands.

  5. 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.

  6. 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 ...

  7. 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.

  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]