Sound intensity level B = (10 dB) log10 (1 /m²) I 10-12 W/m² Doppler effect: source approaching observer f+ = fo 1- Usource/Usound

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Interference of sound

Seiche

A seiche is an oscillating standing wave in a body of water. The term seiche pronounced saysh) can be understood by the sloshing of water back and forth in a swimming pool. The same phenomenon happens on a much larger scale in vast bodies of water including bays and lakes. A seizure can happen in any enclosed or semi-enclosed body of water.