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Understanding the dispersion of waves
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[QUOTE="hutchphd, post: 6206963, member: 635497"] Only a pure frequency harmonic wave of infinite extent is a "simple" wave. For finite extent, there are more wavelengths involved (indeed they conspire to suppress the wave envelope at the ends) We always deal with finite extent, particularly in communications where it is vitally important. The dispersion is as you describe it and Prof. Lewin can tell you the rest far better than I. [/QUOTE]
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Understanding the dispersion of waves
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