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  2. Magnetic balls sold at Walmart recalled due to risk of ...

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    Thousands of sets of high-powered magnetic balls sold at Walmart have been recalled after federal regulators issued a warning about the potential risk of choking, serious injuries and death ...

  3. 35 of the very best gifts for seniors that they'll actually ...

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    AncestryDNA Genetic Test Kit. $99 at Walmart. ... This bike boasts 12 levels of magnetic resistance, ensuring a quiet and smooth ride. ... Nearly 6,000 Walmart reviewers have given this gadget a 4 ...

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  5. How to shop for at-home Covid tests, according to ... - AOL

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    BinaxNOW COVID-19 Antigen Self Test $15.88 at Amazon. BinaxNOW COVID-19 Antigen Self Test $15.88 at Walmart. BinaxNOW COVID-19 Antigen Self Test $23.99 at Walgreens. This kit comes with two tests ...

  6. Epstein frame - Wikipedia

    en.wikipedia.org/wiki/Epstein_frame

    is the average magnetic path length = 0.94 (constant value) m {\displaystyle m~} is the mass of the sample in kilograms If all conditions are as defined in the standard, the standard deviation of the reproducibility of the values is not greater than 1.5% up to 1.5 T [ clarification needed ] for non-oriented electrical steel and up to 1.7 T for ...

  7. Magnetic stirrer - Wikipedia

    en.wikipedia.org/wiki/Magnetic_stirrer

    A magnetic stirrer or magnetic mixer is a laboratory device that employs a rotating magnetic field to cause a stir bar (or flea) immersed in a liquid to spin very quickly, thus stirring it. The rotating field may be created either by a rotating magnet or a set of stationary electromagnets, placed beneath the vessel with the liquid.

  8. Magnetic particle inspection - Wikipedia

    en.wikipedia.org/wiki/Magnetic_particle_inspection

    ISO 9934-3, Non-destructive testing - Magnetic particle testing - Part 3: Equipment; ISO 10893-5, Non-destructive testing of steel tubes. Magnetic particle inspection of seamless and welded ferromagnetic steel tubes for the detection of surface imperfections ; ISO 17638, Non-destructive testing of welds - Magnetic particle testing

  9. EMF measurement - Wikipedia

    en.wikipedia.org/wiki/EMF_measurement

    An EMF meter is a scientific instrument for measuring electromagnetic fields (abbreviated as EMF). Most meters measure the electromagnetic radiation flux density (DC fields) or the change in an electromagnetic field over time (AC fields), essentially the same as a radio antenna, but with quite different detection characteristics.