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  2. The best walker for seniors of 2025, according to physical ...

    www.aol.com/lifestyle/best-walker-seniors...

    Three-wheel walkers: This type of walker will have three wheels with two in the back and one upfront. They can be lighter and easy to use inside houses and handy in tight spaces.

  3. Walmart Gets Laser-Focused on Lowest Prices Again - AOL

    www.aol.com/2012/03/29/walmart-gets-laser...

    Walmart (WMT) has put out an APB for shoppers: "We have the lowest prices all the time. Period." This week, the nation's biggest retailer detailed its $2 billion plan to "reinvest" in low prices ...

  4. Laser pointer - Wikipedia

    en.wikipedia.org/wiki/Laser_pointer

    Red (635 nm), blueish violet (445 nm), and green (520 nm) laser pointers. 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.

  5. Dimmed lights, no in-store radio: Morning shopping at Walmart ...

    www.aol.com/finance/dimmed-lights-no-store-radio...

    Walmart is extending a program that is aimed at making its stores a less chaotic environment, which should be a welcome change for people with sensory disabilities, including autism and ADHD.. The ...

  6. Laser - Wikipedia

    en.wikipedia.org/wiki/Laser

    The beam of a single transverse mode (gaussian beam) laser eventually diverges at an angle that varies inversely with the beam diameter, as required by diffraction theory. Thus, the "pencil beam" directly generated by a common helium–neon laser would spread out to a size of perhaps 500 kilometers when shone on the Moon (from the distance of ...

  7. Laser safety - Wikipedia

    en.wikipedia.org/wiki/Laser_safety

    Furthermore, some lasers emit more than one wavelength of light, and this may be a particular problem with some less expensive frequency-doubled lasers, such as 532 nm "green laser pointers" which are commonly pumped by 808 nm infrared laser diodes, and also generate the fundamental 1064 nm laser beam which is used to produce the final 532 nm ...

  8. Optical tweezers - Wikipedia

    en.wikipedia.org/wiki/Optical_tweezers

    However a number of other beam types have been used to trap particles, including high order laser beams i.e. Hermite-Gaussian beams (TEM xy), Laguerre-Gaussian (LG) beams (TEM pl) and Bessel beams. Optical tweezers based on Laguerre-Gaussian beams have the unique capability of trapping particles that are optically reflective and absorptive.

  9. The best Halloween decor to shop during Walmart's Holiday ...

    www.aol.com/lifestyle/the-best-halloween-decor...

    Walmart's big October sale is chock-full of discounts on indoor and outdoor decor ... Costway 8-Foot Dead Tree and Pumpkin Blowup with LED Lights. $73 $139 Save $66. See at Walmart. YouPins Smoke ...

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