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Originally Posted by Linton
You might want to remember that sonar(originally asdic) and radar were both invented here in Britain
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Active sonar, yes. Passive... is hard to say who invented it, but Leonardo Da Vinci already described that if you introduce a tube on the water and put your ear on one side, you can hear a boat from far distance.
Wonder what Dan Brown think about it :hmm: :rotfl: