LM of compact disc

LM of compact disc

T515/0112 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 44.4MB

Downloadable file size: 4.0MB

Price image Pricing

Please login to use the price calculator


Credit: DR JEREMY BURGESS/SCIENCE PHOTO LIBRARY.

Caption: Light micrograph of a compact disc showing the diffraction of light from the music grooves (left) & soundless grooves (colourful right). The surface was deliberately scratched. The colours are produced by interference between reflected rays of light from adjacent grooves. The disc is made of plastic, which is pressed with a series of fine depressions representing a digitised musical signal, which is read by laser. To reflect the laser light, the plastic is coated with a metal, which follows the depressions exactly. A layer of transparent plastic is added, which prevents dust & scratches (except probably at this magnitude) from affecting the sound. Mag:X13 (at 35mm size).

Release details: Model release not required. Property release not required.

Keywords: audio sound, cd, communication, communications, compact disc, diffraction, interference, light, light micrograph, music, technology

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.