Mach numbers are used in relation to the velocity of objects moving through a fluid, most commonly applied to aircraft. It indicates the speed of the aircraft relative to the speed of sound in that medium.
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Sonar is mostly used by navigators. Sonar (Sound Navigation and Ranging) is a technology that uses sound waves to detect objects underwater. It is widely employed by navigators, including naval forces, commercial ships, and submarines, to navigate safely, avoid obstacles, ...
The walls, ceiling, and floor of a good auditorium are covered with fibrous materials like carpet and glass fiber to prevent echo by absorbing sound. These materials dampen sound waves, reducing reverberation and ensuring clearer acoustics for the audience. By ...
The working system of radar is based on reflection of radio waves. Radar (Radio Detection and Ranging) uses radio waves transmitted from an antenna. These waves are directed towards an object, and some of them reflect back to the radar ...
The cause of echo is reflection of sound. When sound waves encounter a smooth and hard surface, such as a wall or cliff, they bounce back towards the source. If the reflected sound reaches the listener’s ears distinctively after the ...