Compact discs with light interference patterns
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Compact discs with light interference patterns
Compact discs. Photograph of several audio compact discs (CD). 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
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6441095
© DAMIEN LOVEGROVE/SCIENCE PHOTO LIBRARY
Audio Audio Sound Communication Communications Compact Disc Data Storage Disc Interference Pattern Repeated
EDITORS COMMENTS
This print showcases the intricate beauty of compact discs, revealing their hidden secrets. The image captures several audio CDs, each displaying mesmerizing light interference patterns. These discs serve as a medium for storing music in a digitized format, enabling us to enjoy our favorite tunes with exceptional sound quality. The CD's surface is adorned with fine depressions that represent the encoded musical signal. To reflect laser light effectively, a thin film of metal, typically aluminum, meticulously follows these depressions. This reflective layer is then safeguarded by a thick coating of transparent plastic, ensuring protection against dust and scratches that could compromise the audio experience. With an impressive storage capacity of approximately 80 minutes worth of music, these compact discs have revolutionized the way we consume and share audio content. They have become an essential tool in communication and technology advancements. In this photograph from Science Photo Library, we witness not only the technical marvel behind CDs but also their artistic allure through the striking interference patterns created by light interacting with their surfaces. It serves as a reminder that even within seemingly mundane objects lie extraordinary feats of engineering and design – forever transforming how we connect with music and communicate through soundwaves.
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