DVD-RW
(DVD-Read Write) A rewritable (re-recordable) DVD disc for both movies and data from the DVD Forum. Also called "DVD Dash RW" and "DVD Minus RW," DVD-RW uses phase change recording. The media hold 4.7GB per side and can be rewritten 1,000 times. See DVD drives, DVD, DVD+RW and optical disc.In practice, the term "DVD" refers to all DVD formats. The phrase "rewrite the data on the DVD" really means "rewrite the data on the DVD-RW or DVD+RW." See DVD.
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| Phase Change Recording |
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| In rewritable DVDs, different intensities of the laser turn bits in the phase change recording layer between a crystalline state and an amorphous state. |
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