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Falling compact discs leaving trails of colour

Falling compact discs leaving trails of colour

T515/0229

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Credit

KEN M. JOHNS / SCIENCE PHOTO LIBRARY KEN M. JOHNS / SCIENCE PHOTO LIBRARY

Caption

Compact discs. Falling compact discs leaving trails of colour. Each disc stores data as a series of fine depressions, representing a digitised signal capable of being read by a laser. To reflect the laser light, the data layer is coated with a fine film of metal which follows the depressions exactly. This layer is covered by layer of plastic which prevents dust and scratches from affecting the reading of the information.

Release details

Model release not required. Property release not required.

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