Write an expression in Cartesian coordinates for a harmonic plane wave of amplitude A and frequency

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Write an expression in Cartesian coordinates for a harmonic plane wave of amplitude A and frequency ω propagating in the direction of the vector k, which in turn lies on a line drawn from the origin to the point (4, 2, 1). [First determine vector k and then dot it with vector r.]

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Optics

ISBN: 978-0133977226

5th edition

Authors: Eugene Hecht

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