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2. Underwater acoustics - Wikipedia

   en.wikipedia.org/wiki/Underwater_acoustics

   Output of a computer model of underwater acoustic propagation in a simplified ocean environment. A seafloor map produced by multibeam sonar. Underwater acoustics (also known as hydroacoustics) is the study of the propagation of sound in water and the interaction of the mechanical waves that constitute sound with the water, its contents and its boundaries.

3. Communication in aquatic animals - Wikipedia

   en.wikipedia.org/wiki/Communication_in_aquatic...

   As sound travels faster and over a larger distance in water than in air, aquatic animals can use sound signals for long-distance communication while terrestrial animals cannot. [4] For example, a blue whale can communicate with another blue whale using sound over thousands of miles across the sea. [6]

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5. Underwater acoustic communication - Wikipedia

   en.wikipedia.org/wiki/Underwater_acoustic...

   Underwater acoustic communication is a technique of sending and receiving messages in water. [1] There are several ways of employing such communication but the most common is by using hydrophones . Underwater communication is difficult due to factors such as multi-path propagation , time variations of the channel, small available bandwidth and ...

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   There are tons of bestsellers hiding in the Walmart sale section this weekend, like this cordless vac for just 80% off. The best deals to shop during Walmart's weekly sale: Save on Shark, Ninja ...

7. Ultrasonic transducer - Wikipedia

   en.wikipedia.org/wiki/Ultrasonic_transducer

   Sound field of a non focusing 4 MHz ultrasonic transducer with a near field length of N = 67 mm in water. The plot shows the sound pressure at a logarithmic db-scale. Sound pressure field of the same ultrasonic transducer (4 MHz, N = 67 mm) with the transducer surface having a spherical curvature with the curvature radius R = 30 mm