wellis
How long ago has the basic method of SONAR been in use?
Sonar
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Zaphod
Replied to: How long ago has the basic method of SONAR been in...
The method of Sonar has been said to be in use for millions of years in its primitive state
replied to: Zaphod
dbrunner
Replied to: The method of Sonar has been said to be in use...
Leonardo Da Vinci has spoken of a method of holding a tube in the water and detecting vessels in the sorrounding