Sujet
Mercury vacuum pump being used to evacuate light bulbs on commercial scale c1883
Légende
Mercury vacuum pump being used to evacuate (exhaust) light bulbs on commercial scale c1883. Pump here is Geissler's as modified by Topler and was type used by the Swan Company. From R. Wormell "Electricity in the Service of Man" London 1896. Engraving
Date
19e siècle
Crédit
Photo12/Ann Ronan Picture Library
Notre référence
ARP07104_460001299
Licence
Droits gérés
Format disponible
30,8Mo (4,8Mo) / 25,7cm x 30,0cm / 3038 x 3543 (300dpi)