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SEM of surface of cracked compact disc

SEM of surface of cracked compact disc


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SEM of surface of cracked compact disc

False colour scanning electron micrograph of the surface of a compact disc cracked to show the musical layer below (centre). The disc is made of plastic, which is pressed with a series of fine depressions (notches), 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 (unseen) which follows the depressions exactly. This layer is covered by another layer of transparent plastic, which is visible here. The music is sandwiched between two layers of plastic, which prevents dust & scratches from affecting the sound. Magnification:X1000 at 10x8inch X143 at 35mmsize. Blue & yellow colorvir

Science Photo Library features Science and Medical images including photos and illustrations

Media ID 6441417

© DR JEREMY BURGESS/SCIENCE PHOTO LIBRARY

Audio Sound Communication Communications Compact Disc Music


EDITORS COMMENTS
This print showcases the intricate surface of a cracked compact disc, revealing the hidden musical layer beneath. The false color scanning electron micrograph highlights the remarkable details of this technological marvel. Constructed primarily from plastic, the disc is meticulously pressed with a series of fine depressions or notches that represent a digitized musical signal. These notches can be read by a laser to produce sound. To enhance reflectivity and enable laser reading, an unseen layer of metal coats the music layer precisely following its depressions. In this image, we observe another transparent plastic layer covering the music layer, allowing us to witness its delicate structure. This protective sandwiching design ensures that dust and scratches do not compromise the quality of sound produced. The photograph's magnification at X1000 reveals mesmerizing intricacies when viewed on an impressive 10x8-inch print or X143 when observed at 35mm size. The vibrant blue and yellow colors add visual interest to this scientific marvel captured by Science Photo Library. This visually stunning depiction provides insights into both communication technology and audio sound reproduction through compact discs without mentioning any specific commercial use or company affiliation.

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