LM of a compact disc
Bildnummer 11896940
| Light micrograph of a compact disc showing the diffraction of light from the music grooves (top) & plain grooves (colourful bands). 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 capable of being read by a laser. To reflect the laser light,the plastic layer is coated with a metal (aluminium),which follows the depressions exactly. This layer (music layer) is covered by another layer of transparent plastic,which prevents dust & scratches from affecting the sound. Mag:X13 (at 35mm size) | |
| Lizenzart: | Lizenzpflichtig |
| Credit: | Science Photo Library / Burgess, Dr. Jeremy |
| Bildgröße: | 3786 px × 2649 px |
| Modell-Rechte: | nicht erforderlich |
| Eigentums-Rechte: | nicht erforderlich |
| Restrictions: | - |
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