No matter where you are in a room, you can hear sound that emanates from a single hole. You can see light that spills through a small crack. You are picking up on waves, even though they’re getting ...

SIAM Journal on Applied Mathematics, Vol. 60, No. 3 (Feb. - Mar., 2000), pp. 868-890 (23 pages) A physical interface can often be modeled as a surface that moves with a velocity determined by the ...

This is a preview. Log in through your library . Abstract A macroscopic theory of interference and diffraction of light in stationary fields produced by finite sources which emit light within a finite ...

OCEAN waves approaching a beach may be discussed by the method of geometrical optics; the frequency having been assigned, the phase velocity is determined by the depth; the rays are determined by ...