An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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acoustic wave equation
  هموگش ِ موج ِ صدایی  
hamugeš-e mowj-e sedâyi
Fr.: équation de l'onde acoustique  

A → differential equation that describes the time evolution of the → scalar potential of the field φ. It is expressed by: ∇2φ = (1/c2)∂2φ/∂t2, where c is → velocity of → longitudinal waves and ∇2 is the → Laplacian operator.

See also: → acoustic; → wave; → equation.