Compact disc and laser. A compact disc (CD) being read by a laser. The disc stores audio data such as 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 and scratches from affecting the sound quality | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Camazine, Scott |
Bildgröße: | 3230 px × 4175 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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