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Home > All Images > 1993 > October > 19 Oct 1993

Images Dated 19th October 1993

Choose from 9 pictures in our Images Dated 19th October 1993 collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.


Compact disc with light interference patterns Featured 19 Oct 1993 Image

Compact disc with light interference patterns

Compact disc. Photograph of an audio compact disc. The CD stores 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, normally aluminium, which follows the depressions exactly. The reflective surface is covered by a thick layer of transparent plastic which prevents dust scratches from affecting the sound quality. A standard audio CD can store about 80 minutes of music

© DAMIEN LOVEGROVE/SCIENCE PHOTO LIBRARY