The development of the acoustic transducer that converted converting electrical energy to sound waves enabled the rapid advances in SONAR design and technology during the last years of world war 1 (1 gen 1916 anni – 11 nov 1918 anni)
Aggiunto al nastro di tempo:
Data:
1 gen 1916 anni
11 nov 1918 anni
~ 2 years and 10 months