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imaginary circle

См. также в других словарях:

  • Circle at infinity — Infinity In*fin i*ty, n.; pl. {Infinities}. [L. infinitas; pref. in not + finis boundary, limit, end: cf. F. infinit[ e]. See {Finite}.] [1913 Webster] 1. Unlimited extent of time, space, or quantity; eternity; boundlessness; immensity. Sir T.… …   The Collaborative International Dictionary of English

  • Circle (Big Head Todd and the Monsters song) — Circle Single by Big Head Todd and the Monsters from the album Sister Sweetly Released 1993 Format CD, compact cassette …   Wikipedia

  • circle of longitude — circle of longitude, Astronomy. an imaginary great circle through the poles of the earth …   Useful english dictionary

  • Imaginary unit — i in the complex or cartesian plane; real numbers fall on the horizontal axis, and imaginary numbers fall on the vertical axis In mathematics, the imaginary unit allows the real number system ℝ to be extended to the complex number system ℂ, which …   Wikipedia

  • Circle of latitude — Map of Earth Longitude (λ) Lines of longitude appear vertical with varying curvature in this projection, but are actually halves of great ellipses, with identical radii at a given latitude. Latitude (φ) Lines of latitude appear …   Wikipedia

  • Imaginary line — In general, an imaginary line is any sort of line that has only an abstract definition, and does not exist in fact.As a geographical concept, an imaginary line may serve as an arbitrary division (such as a border). It may also be a standardized… …   Wikipedia

  • Pitch circle — In mechanical engineering, a pitch circle (operating) is the curve of intersection of a pitch surface of revolution and a plane of rotation. It is the imaginary circle that rolls without slipping with a pitch circle of a mating gear.1 Notes 1.… …   Wikipedia

  • pitch circle — Mach. an imaginary circle within the profiles of the teeth of a gear, such that it rotates against a similar circle rotating at the same rate on a meshing gear. Also called pitch line. [1810 20] * * * …   Universalium

  • pitch circle — /ˈpɪtʃ sɜkəl/ (say pich serkuhl) noun an imaginary circle concentric with the axis of a toothed wheel, at such a distance from the base of the teeth that it is in contact with and rolls upon a similar circle of another toothed wheel engaging with …  

  • Antarctic Circle — [also a c ] an imaginary circle parallel to the equator, c. 66°34′ south of it …   English World dictionary

  • Arctic Circle — [also a c ] an imaginary circle parallel to the equator, c. 66°34′ north of it: see LATITUDE …   English World dictionary

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