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  1. PEN - Penumbra, Inc.

    Yahoo Finance

    188.04-1.43 (-0.75%)

    at Mon, Jun 3, 2024, 4:00PM EDT - U.S. markets closed

    After Hours 191.00 +2.96 (+1.57%)

    Nasdaq Real Time Price

    • Open 190.38
    • High 192.47
    • Low 186.83
    • Prev. Close 189.47
    • 52 Wk. High 348.67
    • 52 Wk. Low 180.93
    • P/E 78.68
    • Mkt. Cap 7.29B
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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.

  4. List of Walmart brands - Wikipedia

    en.wikipedia.org/wiki/List_of_Walmart_brands

    George – men's casual and dress clothing, shoes, and accessories (previously also women's and children's) Terra & Sky – plus size women's clothing. Time and Tru – misses size women's clothing, shoes, and accessories. Wonder Nation – children's clothing, shoes, and accessories. K Alexander – Men's Accessories.

  5. Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/Pennsylvania

    Pennsylvania ( / ˌpɛnsɪlˈveɪniə / ⓘ, lit.'Penn's forest country' ), officially the Commonwealth of Pennsylvania [b] ( Pennsylvania Dutch: Pennsylvanie ), [7] is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States.

  6. 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.

  7. Tooth whitening - Wikipedia

    en.wikipedia.org/wiki/Tooth_whitening

    Tooth whitening or tooth bleaching is the process of lightening the color of human teeth. [1] Whitening is often desirable when teeth become yellowed over time for a number of reasons, and can be achieved by changing the intrinsic or extrinsic color of the tooth enamel. [2] The chemical degradation of the chromogens within or on the tooth is ...

  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]