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Engineering Physics

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Physics of wave group velocities for media with dispersion
A.V. Koshelev, A.A. Rukhadze

Phase and group velocities are the mostly useful parameters for investigations of physical processes and measurements in dispersion media. The difference between the phase velocity of ideal strongly monochromatic wave and group velocity of real nonmonochromatic wave leads to the discrepancy of their physical interpretation. In is shown, that as a result there arises the mistakes in theoretical investigations as well in experimental measurements. Key words: phase and group velocities, dispersive medium, ionosphere and atmosphere. E-mail: alvlkosh@yandex.ru. Pp. 31-41.

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