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jan 1, 1912 - In spring 1912 Paul Langevin and Constantin Chilowsky developed what they termed "hydrophone" a mechanism for ships to detect icebergs
Added to timeline:
Development of sonar Technology
By
Brady Fortenberry
8 Nov 2018
0
0
400
Date:
jan 1, 1912
Now
~ 114 years ago
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