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  2. Refrigerator magnet - Wikipedia

    en.wikipedia.org/wiki/Refrigerator_magnet

    A refrigerator magnet or fridge magnet is a small magnet, often attached to an artistic or whimsical ornament, which may be used to post items such as shopping lists, Christmas cards, child art or reminders on a refrigerator door, or which simply serves as decoration. [1] [2] [3] Refrigerator magnets come in a wide variety of shapes and sizes ...

  3. Glossary of mathematical symbols - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_mathematical...

    A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various types, many symbols are needed for ...

  4. Magnetism - Wikipedia

    en.wikipedia.org/wiki/Magnetism

    Magnetism is the class of physical attributes that occur through a magnetic field, which allows objects to attract or repel each other. Because both electric currents and magnetic moments of elementary particles give rise to a magnetic field, magnetism is one of two aspects of electromagnetism . The most familiar effects occur in ferromagnetic ...

  5. Plasma sheet - Wikipedia

    en.wikipedia.org/wiki/Plasma_sheet

    The plasma sheet is highlighted in yellow. In the magnetosphere, the plasma sheet is a sheet-like region of denser (0.3-0.5 ions/cm 3 versus 0.01-0.02 in the lobes) [citation needed] hot plasma and lower magnetic field located on the magnetotail and near the equatorial plane, between the magnetosphere's north and south lobes.

  6. Ferrite (magnet) - Wikipedia

    en.wikipedia.org/wiki/Ferrite_(magnet)

    A stack of ferrite magnets, with magnetic household items stuck to it. A ferrite is one of a family of iron oxide -containing magnetic ceramic materials. They are ferrimagnetic, meaning they are attracted by magnetic fields and can be magnetized to become permanent magnets. Unlike many ferromagnetic materials, most ferrites are not electrically ...

  7. Why a Chinese anti-doping scandal feeds doubts about ... - AOL

    www.aol.com/sports/why-chinese-anti-doping...

    PARIS — At the heart of the anti-doping saga looming over the 2024 Olympics, and stoking a "fight" on the eve of the Games, is a mystery that might never be solved. What we know is that, in 2021 ...

  8. After reshaping the conference, what's next for Brett Yormark ...

    www.aol.com/sports/reshaping-big-12-whats-next...

    The ACC and Big Ten hold their media days the following week, July 22-25, with a combined six new West Coast teams. That Friday, July 26, is traditionally reserved for the Pac-12 media day.

  9. Heliospheric current sheet - Wikipedia

    en.wikipedia.org/wiki/Heliospheric_current_sheet

    The heliospheric current sheet, or interplanetary current sheet, is a surface separating regions of the heliosphere where the interplanetary magnetic field points toward and away from the Sun. [1] A small electrical current with a current density of about 10 −10 A /m 2 flows within this surface, forming a current sheet confined to this surface.

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