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Paul Langevin & Constantin Chilowsky (jan 1, 1914 – jan 1, 1918)

Description:

Discover SONAR - detecting underwater objects using echoing sound waves emitted from transmitter. Receiver pic up echoes, calculates distance from time taken to travel & come back.

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History of Ultrasound

ByRuqayyah
16 Mar 2024
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0
160

Date:

jan 1, 1914
jan 1, 1918
~ 4 years
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