Sujet
Sound Travel
Légende
Experiment ot show that sound needs a medium in which to travel. When air in jar is in normal state the bell is audible. When air is evacuated no sound is heard. From ''Sound'' by John Tyndall, London, 1867.
Date
1867
Crédit
Photo12/Ann Ronan Picture Library
Notre référence
ARP18A08_483
Licence
Droits gérés
Format disponible
60,0Mo (1,4Mo) / 29,1cm x 51,6cm / 3438 x 6099 (300dpi)