Sound pressure recordings,19th-century artwork. These recordings (black circular areas) are produced by a process called tonography,recording on a membrane the sounds produced by different humans using a variety of musical instruments. Artwork from the 20th volume (second period of 1897) of the French popular science weekly 'La Science Illustree' | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library |
Bildgröße: | 4760 px × 4039 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |