ELEG 3704 Lecture Notes - Lecture 2: Permittivity, Propagation Constant, Wavelength
9 Sep 2016
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Lec 2 8-25-16 ch 1 introduction: waves and. Determining the direction of propagation of a traveling wave. When looking at the equation for a 1-d wave the direction of propagation can be determined by the signs of t and x. If the signs of t and x are the same (both positive or both negative) then the direction is in the -x direction. If the signs are different (one positive and one negative) then the direction is in the +x direction. Exercise 1-2 pg. 27 positive then the wave will shift to the left and if it is negative it will shift to the right. A wave can be said to be leading or lagging another reference wave, depending on their relative shifts. If wave a is shifted to the left of wave b then a is leading b and b is lagging a.
