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 ...
One of the long-standing problems in antenna engineering is the realization of highly directive beams using low-profile devices. In this paper, we provide a solution to this problem by means of ...
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 ...
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