
Sujet
Carbon microphone, 1882. Artist: Unknown
Légende
Carbon microphone, 1882. Device invented in 1878 by David Edward Hughes (1831-1900), English inventor. From Physics in Pictures by Theodore Eckardt. (London, 1882).
Oxford Science Archive
Date
1882
Crédit
Photo12/Heritage Images
Notre référence
HRM19B64_229
Model release
Non
Licence
Droits gérés
Format disponible
50,0Mo (1,4Mo) / 28,7cm x 43,6cm / 3394 x 5148 (300dpi)