10 uses of infrasonic waves
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The term "Infrasonic" applied to sound refers to sound waves below the frequencies of audible sound,and nominally includes anything under 20 Hz.Source of Infrasound in nature includes volcanoes,avalanches earthquakes and meteorites.
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Infrasonic waves are utilized for monitoring earthquakes,charting rocks and petroleum formations below the earth,and also in ballistocardiography and sesemodiography to study the mechanics of the heart.
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