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Hydrophone

A hydrophone is a sound-to-electricity transducer for use in water or other liquids, analogous to the microphone. Most use the piezoelectric effect.



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Jordanes

... or Jordanis was a 6th century historian. He was an Ostrogoth and was a notary of Gothic kings in Italy. At the time of Justinian, he was a Christian and ...

 
 
 
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