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  2. Compact disc bronzing - Wikipedia

    en.wikipedia.org/wiki/Compact_disc_bronzing

    Compact disc bronzing, or CD bronzing, is a specific, uncommon variant of disc rot, a type of corrosion that affects the reflective layer of compact discs and renders them unreadable over time. The phenomenon was first reported by John McKelvey in the September/October 1994 issue of American Record Guide .

  3. Disc rot - Wikipedia

    en.wikipedia.org/wiki/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. Optical disc - Wikipedia

    en.wikipedia.org/wiki/Optical_disc

    An optical disc is a flat, usually [note 1] disc-shaped object that stores information in the form of physical variations on its surface that can be read with the aid of a beam of light. Optical discs can be reflective, where the light source and detector are on the same side of the disc, or transmissive, where light shines through the disc to ...

  5. Rainbow Books - Wikipedia

    en.wikipedia.org/wiki/Rainbow_Books

    The Blue Book is a compact disc standard that defines the Enhanced Music CD format, which combines audio tracks and data tracks on the same disc. E-CD/CD+/CD Extra ( Enhanced ) [ 21 ] – a standard jointly developed and published by Microsoft , Philips and Sony

  6. Ground wave - Wikipedia

    en.wikipedia.org/wiki/Ground_wave

    Ground waves propagate parallel to and adjacent to the surface of the Earth, and are capable of covering long distances by diffracting around the Earth's curvature. This radiation is also known as the Norton surface wave , or more properly the Norton ground wave , because ground waves in radio propagation are not confined to the surface.

  7. File:Surface orientation.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Surface_orientation.pdf

    English: Surface orientation on an irregularly shaped object. SVG format didn't upload properly, next best thing is PDF. SVG format didn't upload properly, next best thing is PDF. Date

  8. Environmental Health

    images.huffingtonpost.com/2009-01-27-1476069x82.pdf

    or the increasingly popular membrane technology that is mercury free and more energy-efficient. Worldwide there are approximately fifty mercury cell chlor-alkali plants in operation [1]. Of those there are eight in the United States (US) [2]. In 2003 the EPA reported in the Federal Register that on average approximately seven tons of mercury

  9. Norton Guides - Wikipedia

    en.wikipedia.org/wiki/Norton_Guides

    Norton Guides manual and disks. Norton Guides were a product family sold by Peter Norton Computing.The guides were written in 1985 by Warren Woodford for the x86 Assembly Language, C, BASIC, and Forth languages and made available to DOS users via a terminate-and-stay-resident (TSR) program that integrated with programming language editors on IBM PC type computers.