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The preservation of optical media is essential because it is a resource in libraries, and stores audio, video, and computer data. While optical discs are generally more reliable and durable than older media types, (magnetic tape, LPs and other records) environmental conditions and/or poor handling can result in lost information.
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.
Although discs scratched by the Xbox 360 are not covered under its warranty, [40] Microsoft's Xbox Disc Replacement Program [41] will sell customers a new copy of discs scratched by the Xbox 360, if they are published in countries where the Xbox was originally sold, at a cost of $20. [42] The published list of games that qualify, however, is ...
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Brasso has also been used to polish out scratches in plastics: It has been used to polish CDs, DVDs, screens, and pools to repair scratches. It is a mild solvent and an extremely fine abrasive, so when applied to the reflective surface of the disc and rubbed radially (in straight lines between the edge and centre), it can smooth scratches and reduce their effect.
With 15.5 million U.S. adults currently diagnosed with ADHD, there is a growing focus on warning signs of the disorder. Mental health experts share the most common signs and symptoms.
When cleaning the enameled cast iron routinely after a cooking session or a recipe, remember a few important tips. First, avoid washing the enameled cast iron immediately after cooking in it.
Vinyl discs can become so dirty and scratched that they are virtually unlistenable. Felt and carbon-fibre brush. It is recommended that discs be cleaned before—and after—each playback, carbon-fibre brushes are quite effective. Records should be cleaned in a circular motion, in the direction of the grooves.