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It's pretty easy to find the "working principle" of surface capacitive touchscreen like this one from elotouch: http://www.elotouch.com/Technologies/SurfaceCapacitive/howitworks.asp. Roughly...
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It's kind of strange to me that when reading topics like "components of cellphone screen", people often mention an outermost anti-reflecting coating which takes advantage of destructive...
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I recently read Kane.S.Yee's paper on FDTD (link provided). To my understanding, the paper provides an algorithm to simulate EM wave propagation by discretizing space and time to sufficiently...
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