Compact disc manufacture. A researcher checks the position of a compact disc master,which is about to be 'written' upon by a laser. The laser is switched on and off at incredible speed to create hardened spots in a thin photo-resist plastic layer on the disc. Once the 'writing' is complete,the unhardened photo-resist remaining is etched off. A printing master is made by making a duplicate of the laser master,but in metal. On the final CD,the data are encoded as a pattern of 'pits',and are read by laser. Photographed at the Philips research laboratory in The Netherlands | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Plailly, Philippe |
Bildgröße: | 2515 px × 3548 px |
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Eigentums-Rechte: | nicht erforderlich |
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