Example: Computing Optical Path Length
In this video, I go over how to compute optical path length (OPL) in several examples of increasing complexity, without dealing with phase shifts.
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This is part of my series on introductory electromagnetism, where we explore one of the fundamental forces of nature - how your phone charges and communicates with the rest of the world, why you should be afraid of the sun, and the fundamentals of electric and magnetic forces and fields, voltages,