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Compact disc being read by laser

Compact disc being read by laser

T515/0198

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Credit

SCOTT CAMAZINE / SCIENCE PHOTO LIBRARY SCOTT CAMAZINE / SCIENCE PHOTO LIBRARY

Caption

Compact disc and laser. A compact disc (CD) being read by a laser. The disc stores audio data such as music, as a series of fine depressions, representing a digitised musical signal capable of being read by a laser. To reflect the laser light, the music layer is coated with a fine film of metal which follows the depressions exactly. This layer is covered by another layer of transparent plastic which prevents dust and scratches from affecting the sound quality.

Release details

Model release not required. Property release not required.

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