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  1. www.britannica.com › technology › compact-discCompact disc (CD) | Definition & Facts | Britannica

    3. Mai 2024 · compact disc (CD), a molded plastic disc containing digital data that is scanned by a laser beam for the reproduction of recorded sound and other information. Since its commercial introduction in 1982, the audio CD has almost completely replaced the phonograph disc (or record) for high-fidelity recorded music.

    • Digital Sound Recording

      digital sound recording, method of preserving sound in which...

    • Blu-ray

      Blu-ray, optical disc data-storage format that is most often...

  2. www.classicfm.com › composers › beethovenWhy is a CD 74 minutes long? It’s because of Beethoven - Classic...

    7. Mai 2024 · They called it: the ‘compact disc’, known today as the CD. It was a modern product for a modern era. But in designing the shiny metallic disc they went back more than 150 years in history for inspiration, to the great German composer and revolutionary of his own time, Ludwig van Beethoven .

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  4. www.youtube.com › watchThe Story of Compact Discs Simplified - YouTube

    14. Mai 2024 · 45 subscribers. Subscribed. 1. 78 views 2 days ago #CompactDiscs #TechnologyExplained. Explore the fascinating history and technology behind compact discs (CDs) in simple English. From their...

  5. www.verywellhealth.com › disc-extrusion-protrusion-andTypes of Spinal Disc Herniation - Verywell Health

    Vor 5 Tagen · A disc protrusion is a type of disc herniation, as are disc extrusions and sequestrations. These "slipped disc" injuries typically occur in the lumbar spine of the lower back but can occur in the neck (cervical spine) or upper back ( thoracic spine ), too. It's a common cause of lower back pain, which is experienced by 60% to 80% of people at ...

  6. www.britannica.com › science › accretion-diskAccretion disk | Astronomy & Formation Processes | Britannica

    11. Mai 2024 · Accretion disk, a disklike flow of gas, plasma, dust, or particles around any astronomical object in which the material orbiting in the gravitational field of the object loses energy and angular momentum as it slowly spirals inward. In astrophysics, the term accretion refers to the growth in mass

  7. wiki.alquds.eduCompact disc - Wikipedia - Al-Quds University

    3. Mai 2024 · 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. The first compact disc wa