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convergent rays

См. также в других словарях:

  • Convergent — Con*ver gent, a. [Cf. F. convergent.] tending to one point of focus; tending to approach each other; converging. [1913 Webster] As many rays of light, as conveniently can be let in, and made convergent. Boyle. [1913 Webster] The vast dome of its… …   The Collaborative International Dictionary of English

  • Converging rays — Converging Con*ver ging, a. Tending to one point; approaching each other; convergent; as, converging lines. Whewell. [1913 Webster] {Converging rays}(Opt.), rays of light, which, proceeding from different points of an object, tend toward a single …   The Collaborative International Dictionary of English

  • focus — 1. (F) The point at which the light rays meet after passing through a convex lens. 2. The center, or the starting point, of a disease process. [L. a hearth] conjugate foci two points so related to a lens or …   Medical dictionary

  • converging lens — noun lens such that a beam of light passing through it is brought to a point or focus • Syn: ↑convex lens • Hypernyms: ↑lens, ↑lense, ↑lens system • Hyponyms: ↑sunglass * * * noun …   Useful english dictionary

  • converging lens — Optics. a lens that converts parallel rays of light to convergent rays and produces a real image. Also called positive lens. Cf. diverging lens. See diag. under lens. * * * …   Universalium

  • Hyperopia — Farsightedness; the ability to see distant objects more clearly than close objects. Hyperopia may be corrected with glasses or contact lenses. * * * Longsightedness; that optical condition in which only convergent rays can be brought to focus on… …   Medical dictionary

  • real focus — rē(ə)l n a point at which rays (as of light) converge or from which they diverge * * * the point at which convergent rays intersect …   Medical dictionary

  • virtual focus — noun 1. : a point from which divergent rays (as of light) seem to emanate but do not actually do so (as in the image of a point source seen in a plane mirror) 2. : a point toward which convergent rays are directed but which being intercepted they …   Useful english dictionary

  • analysis — /euh nal euh sis/, n., pl. analyses / seez /. 1. the separating of any material or abstract entity into its constituent elements (opposed to synthesis). 2. this process as a method of studying the nature of something or of determining its… …   Universalium

  • Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry       The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …   Universalium

  • microscope — /muy kreuh skohp /, n. 1. an optical instrument having a magnifying lens or a combination of lenses for inspecting objects too small to be seen or too small to be seen distinctly and in detail by the unaided eye. 2. (cap.) Astron. the… …   Universalium

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