atmospheric refraction

      change in the direction of propagation of electromagnetic radiation or sound waves in traversing the atmosphere. Such changes are caused by gradients in the density of the air. See refraction.

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Universalium. 2010.

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  • Atmospheric refraction — is the deviation of light or other electromagnetic wave from a straight line as it passes through the atmosphere due to the variation in air density as a function of altitude. Atmospheric refraction near the ground produces mirages and can make… …   Wikipedia

  • atmospheric refraction — atmosferinis lūžimas statusas T sritis fizika atitikmenys: angl. atmospheric refraction; terrestrial refraction vok. atmosphärische Brechung, f rus. атмосферная рефракция, f pranc. réfraction atmosphérique, f …   Fizikos terminų žodynas

  • atmospheric refraction — atmosferinė refrakcija statusas T sritis fizika atitikmenys: angl. atmospheric refraction vok. atmosphärische Refraktion, f rus. атмосферная рефракция, f pranc. réfraction atmosphérique, f …   Fizikos terminų žodynas

  • Refraction — Re*frac tion (r?*fr?k sh?n), n. [F. r[ e]fraction.] 1. The act of refracting, or the state of being refracted. [1913 Webster] 2. The change in the direction of ray of light, heat, or the like, when it enters obliquely a medium of a different… …   The Collaborative International Dictionary of English

  • Refraction circle — Refraction Re*frac tion (r?*fr?k sh?n), n. [F. r[ e]fraction.] 1. The act of refracting, or the state of being refracted. [1913 Webster] 2. The change in the direction of ray of light, heat, or the like, when it enters obliquely a medium of a… …   The Collaborative International Dictionary of English

  • Refraction of latitude — Refraction Re*frac tion (r?*fr?k sh?n), n. [F. r[ e]fraction.] 1. The act of refracting, or the state of being refracted. [1913 Webster] 2. The change in the direction of ray of light, heat, or the like, when it enters obliquely a medium of a… …   The Collaborative International Dictionary of English

  • Atmospheric diffraction — is manifested in the following principal ways:* Fourier optics is the bending of light rays in the atmosphere, which results in remarkable visual displays of astronomical objects, such as depictions on this page.* Radio wave diffraction is the… …   Wikipedia

  • Réfraction astronomique — Réfraction atmosphérique Photographie de la Lune partiellement obscurcie par l atmosphère terrestre, prise depuis la navette spatiale Discovery. On remarque que la forme apparente de la Lune dans sa partie basse n est plus circulaire en raison de …   Wikipédia en Français

  • Réfraction terrestre — Réfraction atmosphérique Photographie de la Lune partiellement obscurcie par l atmosphère terrestre, prise depuis la navette spatiale Discovery. On remarque que la forme apparente de la Lune dans sa partie basse n est plus circulaire en raison de …   Wikipédia en Français

  • Atmospheric duct — Fata Morgana of Farallon Islands with clearly seen duct In telecommunication, an atmospheric duct is a horizontal layer in the lower atmosphere in which the vertical refractive index gradients are such that radio signals (and light rays) (a) are… …   Wikipedia

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