Sujet
Thomas Edison's Sound Meter.
Légende
Thomas Edison's Sound Meter. A machine which measured the vibrational energy of sounds made by the voice. From El Museo Popular published Madrid, 1889.
Date
1889
Crédit
Photo12/UIG/Universal History Archive
Notre référence
UMG23A64_056
Model release
Non
Property release
Non
Licence
Droits gérés
Format disponible
40,5Mo (3,7Mo) / 43,2cm x 23,5cm / 5100 x 2773 (300dpi)