Acoustic Waves
It is possible to apply the transfer-matrix method to sound waves. Instead of the electric field E and its derivative F, the displacement u and the stress, where is the p-wave modulus, should be used.
Read more about this topic: Transfer-matrix Method (optics)
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“The shattered water made a misty din.
Great waves looked over others coming in,
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That water never did to land before.”
—Robert Frost (1874–1963)