Posted by andrea on Wednesday, June 18, 2008 at 9:56am.
There could be a number of terms that apply.
pressure ridge?
An isotropic wavefront has the form of an expanding sphere.
A planar wave has the form of a plane.
I went to www.google.com and searched for sound wave front, and here are two of the results:
Strong acousto-optic diffraction by a curved-sound wave front (A) Strong acousto-optic diffraction by a curved-sound wave front (A). Authors: Korpel, Adrianus; Pieper, R. J.. Publication: J. Opt. Soc. Am. A, vol. ...
http://adsabs.harvard.edu/abs/1984OSAJ....1.1309K
Sound Wave Solutions If the sound is emitted equally in all directions from the source, a spherical wavefront is formed. Even if it is not emitted equally in all directions, ...
http://www.phy.duke.edu/~rgb/Class/phy51/phy51/node40.html
You can find more information if you search for it.
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