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1 gen 1912 anni - In spring 1912 Paul Langevin and Constantin Chilowsky developed what they termed "hydrophone" a mechanism for ships to detect icebergs

Aggiunto al nastro di tempo:

Development of sonar Technology

ByBrady Fortenberry

8 nov 2018

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Data:

1 gen 1912 anni

Adesso

~ 113 years ago

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