Dispersive Medium

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Dispersive Medium

</dt>
A medium in which the phase velocity of a wave, either electromagnetic or hydromagnetic, is a function of the frequency. </dd>
A plasma is a dispersive medium whereas free space is not, since waves of all frequencies travel in free space with the velocity of light. [[/a>|/a> ]]

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use