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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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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 janv. 1916 – 11 nov 1918)

Ajouté au bande de temps:

Date:

1 janv. 1916
11 nov 1918
~ 2 years and 10 months