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atmospheric duct |
Also found in: Wikipedia | 0.01 sec. |
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atmospheric duct [¦at·mə¦sfir·ik ′dəkt]
(geophysics) A stratum of the troposphere within which the refractive index varies so as to confine within the limits of the stratum the propagation of an abnormally large proportion of any radiation of sufficiently high frequency, as in a mirage. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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