Whate is Sonar? And his work
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Sonar is simply making use of an echo. When an animal or machine makes a noise, it sends sound waves into the environment around it. Those waves bounce off nearby objects, and some of them reflect back to the object that made the noise. ... The range of low-frequency sonar is remarkable......
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Sonar is the short form of sound navigation and ranging it is used to determine the direction, distance and speed of an underwater object with the help of ultrasonic sound waves.
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