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  2. Magnetic-core memory - Wikipedia

    en.wikipedia.org/wiki/Magnetic-core_memory

    The first use of magnetic core was in the Whirlwind computer, [19] and Project Whirlwind's "most famous contribution was the random-access, magnetic core storage feature." [20] Commercialization followed quickly. Magnetic core was used in peripherals of the ENIAC in 1953, [21] the IBM 702 [22] delivered in

  3. Magnetic cartridge - Wikipedia

    en.wikipedia.org/wiki/Magnetic_cartridge

    The first commercially successful type of electrical phonograph pickup was introduced in 1925. Although electromagnetic, its resemblance to later magnetic cartridges is remote: it employed a bulky horseshoe magnet and used the same single-use steel needles which had been standard since the first mechanical transfer disc record players appeared in the 1890s.

  4. Magnetic flux quantum - Wikipedia

    en.wikipedia.org/wiki/Magnetic_flux_quantum

    The magnetic flux, represented by the symbol Φ, threading some contour or loop is defined as the magnetic field B multiplied by the loop area S, i.e. Φ = B ⋅ S.Both B and S can be arbitrary, meaning that the flux Φ can be as well but increments of flux can be quantized.

  5. Scrapbooking - Wikipedia

    en.wikipedia.org/wiki/Scrapbooking

    This video is an example of how to create a page for the new and modern day scrapbooker. Marielen Wadley Christensen (pronounced as the names "Mary Ellen"), of Elk Ridge, Utah, United States (formerly of Spanish Fork, Utah) is credited with turning scrapbooking from what was once just the ages-old hobby into the actual industry containing businesses devoted specifically to the manufacturing ...

  6. Magnetic field - Wikipedia

    en.wikipedia.org/wiki/Magnetic_field

    A magnetic field (sometimes called B-field [1]) is a physical field that describes the magnetic influence on moving electric charges, electric currents, [2]: ch1 ...

  7. Magnetostratigraphy - Wikipedia

    en.wikipedia.org/wiki/Magnetostratigraphy

    Magnetostratigraphy is a geophysical correlation technique used to date sedimentary and volcanic sequences. The method works by collecting oriented samples at measured intervals throughout the section.

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