Photograph of an audio compact disc (CD),showing the multicoloured interference pattern produced by reflecting a laser beam off of the CD's surface. 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 which follows the depressions exactly. This layer is covered by another layer of transparent plastic which prevents dust & scratches from affecting the sound quality | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Pasieka, Alfred |
Bildgröße: | 3071 px × 3031 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |