Mid-19th century Phonautograph, c.1906. Plaster of Paris barrel with brass tube at a with hog's bristle attached to trace vibrations produced in AB on lampblacked cylinder C. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Heritage Images / Oxford Science Archive |
Bildgröße: | 4622 px × 3780 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |