Scanning electron micrograph (SEM) looking down the grooves of a stereo long-playing record. The grooves are cut into a flat disc of polyvinyl chloride. The straightness of the groove will vary with the intensity of the music recorded: the straighter the groove the quieter the music,the wavier the groove (as here) the louder the music. The stylus picks up the music modulation from the sloping sides & transmits it to the cartridge,where a piezoelectric crystal or an electromagnet converts the vibration into an electrical signal. Particles of dust can be seen in & on the grooves. Magnification: X 130 at 35mm size,X 900 at 8x10- inch size | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Burgess, Dr. Jeremy |
Bildgröße: | 5149 px × 3420 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |