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  2. Regina Company - Wikipedia

    en.wikipedia.org/wiki/Regina_company

    Regina shipped 100,000 music boxes between 1892 and 1921, with sales topping out over $2 million a year. The company had 325 employees, and even as Symphonion established an American branch, Regina thrived as the market leader. Competition from the phonograph jeopardized the company in the early years of the 20th century, and in 1902, it ...

  3. Disc rot - Wikipedia

    en.wikipedia.org/wiki/Disc_rot

    Disc rot. Disc rot is the tendency of CD, DVD, or other optical discs to become unreadable because of chemical deterioration. The causes include oxidation of the reflective layer, reactions with contaminants, ultra-violet light damage, and de-bonding of the adhesive used to adhere the layers of the disc together.

  4. Capacitance Electronic Disc - Wikipedia

    en.wikipedia.org/wiki/Capacitance_Electronic_Disc

    Capacitance Electronic Disc. The Capacitance Electronic Disc (CED) is an analog video disc playback system developed by Radio Corporation of America (RCA), in which video and audio could be played back on a TV set using a special stylus and high-density groove system similar to phonograph records. First conceived in 1964, the CED system was ...

  5. Edison Disc Record - Wikipedia

    en.wikipedia.org/wiki/Edison_Disc_Record

    Edison Records logo from 1910s sleeve. The Edison Diamond Disc Record is a type of phonograph record marketed by Thomas A. Edison, Inc. on their Edison Record label from 1912 to 1929. They were named Diamond Discs because the matching Edison Disc Phonograph was fitted with a permanent conical diamond stylus for playing them.

  6. CD player - Wikipedia

    en.wikipedia.org/wiki/CD_player

    A CD player is an electronic device that plays audio compact discs, which are a digital optical disc data storage format. CD players were first sold to consumers in 1982. CDs typically contain recordings of audio material such as music or audiobooks. CD players may be part of home stereo systems, car audio systems, personal computers, or ...

  7. Magneto-optical drive - Wikipedia

    en.wikipedia.org/wiki/Magneto-optical_drive

    A magneto-optical drive is a kind of optical disc drive capable of writing and rewriting data upon a magneto-optical disc. 130 mm (5.25 in) and 90 mm (3.5 in) discs were the most common sizes. In 1983, just a year after the introduction of the compact disc , Kees Schouhamer Immink and Joseph Braat presented the first experiments with erasable ...

  8. James Russell (inventor) - Wikipedia

    en.wikipedia.org/wiki/James_Russell_(inventor)

    Inventing video recording on an optical medium. James T. Russell (born 1931) is an American inventor. He earned a BA in physics from Reed College in Portland in 1953. He joined General Electric 's nearby labs in Richland, Washington, where he initiated many types of experimental instrumentation. He designed and built the first electron beam welder.

  9. Compact disc - Wikipedia

    en.wikipedia.org/wiki/Compact_disc

    t. e. The compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony to store and play digital audio recordings. It uses the Compact Disc Digital Audio format which typically provides 74 minutes of audio on a disc. In later years, the compact disc was adapted for non-audio computer data storage ...

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