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  2. Optical disc packaging - Wikipedia

    en.wikipedia.org/wiki/Optical_disc_packaging

    Optical disc packaging. Stacks of compact disc jewel cases. Optical disc packaging is the packaging that accompanies CDs, DVDs, and other formats of optical discs. Most packaging is rigid or semi-rigid and designed to protect the media from scratches and other types of exposure damage.

  3. Magnetic storage - Wikipedia

    en.wikipedia.org/wiki/Magnetic_storage

    Magnetic storage. Magnetic storage or magnetic recording is the storage of data on a magnetized medium. Magnetic storage uses different patterns of magnetisation in a magnetizable material to store data and is a form of non-volatile memory. The information is accessed using one or more read/write heads .

  4. Halbach array - Wikipedia

    en.wikipedia.org/wiki/Halbach_array

    A Halbach array ( German: [ˈhalbax]) is a special arrangement of permanent magnets that augments the magnetic field on one side of the array while cancelling the field to near zero on the other side. [1] [2] This is achieved by having a spatially rotating pattern of magnetisation. The rotating pattern of permanent magnets (on the front face ...

  5. Inkjet technology - Wikipedia

    en.wikipedia.org/wiki/Inkjet_technology

    Inkjet technology. Inkjet technology originally was invented for depositing aqueous inks on paper in 'selective' positions based on the ink properties only. Inkjet nozzles and inks were designed together and the inkjet performance was based on a design. It was used as a data recorder in the early 1950s, [1] later in the 1950s co-solvent-based ...

  6. LP record - Wikipedia

    en.wikipedia.org/wiki/LP_record

    LP record. The LP (from "long playing" [ 1] or "long play") is an analog sound storage medium, specifically a phonograph record format characterized by: a speed of 33⁄ rpm; a 12- or 10-inch (30- or 25-cm) diameter; use of the "microgroove" groove specification; and a vinyl (a copolymer of vinyl chloride acetate) composition disk.

  7. Flexi disc - Wikipedia

    en.wikipedia.org/wiki/Flexi_disc

    The flexi disc (also known as a phonosheet, Sonosheet or Soundsheet, a trademark) is a phonograph record made of a thin, flexible vinyl sheet with a molded-in spiral stylus groove, and is designed to be playable on a normal phonograph turntable. Flexible records were commercially introduced as the Eva-tone Soundsheet in 1962.

  8. Magnetic cartridge - Wikipedia

    en.wikipedia.org/wiki/Magnetic_cartridge

    A magnetic cartridge, more commonly called a phonograph cartridge or phono cartridge or (colloquially) a pickup, is an electromechanical transducer that is used to play phonograph records on a turntable . The cartridge contains a removable or permanently mounted stylus, the tip - usually a gemstone, such as diamond or sapphire - of which makes ...

  9. Magnetic tape - Wikipedia

    en.wikipedia.org/wiki/Magnetic_tape

    Magnetic tape. 7-inch reel of ¼-inch-wide audio recording tape, typical of consumer use in the 1950s – 70s. Magnetic tape is a medium for magnetic storage made of a thin, magnetizable coating on a long, narrow strip of plastic film. It was developed in Germany in 1928, based on the earlier magnetic wire recording from Denmark.

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