Sujet
Edison's improved form of JW Trowbridge's electric dynamometer
Légende
Edison's improved form of JW Trowbridge's electric dynamometer. "Scientific American" New York 1879
Date
1879
Crédit
Photo12/Ann Ronan Picture Library
Notre référence
ARP07104_460001341
Licence
Droits gérés
Format disponible
28,0Mo (2,2Mo) / 30,0cm x 23,4cm / 3543 x 2766 (300dpi)