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declination instrument

См. также в других словарях:

  • declination — 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

  • Mural instrument — Tycho Brahe s mural quadrant …   Wikipedia

  • Circle of declination — Circle Cir cle (s[ e]r k l), n. [OE. cercle, F. cercle, fr. L. circulus (Whence also AS. circul), dim. of circus circle, akin to Gr. kri kos, ki rkos, circle, ring. Cf. {Circus}, {Circum }.] [1913 Webster] 1. A plane figure, bounded by a single… …   The Collaborative International Dictionary of English

  • Meridian instrument — Meridian Me*rid i*an, n. [F. m[ e]ridien. See {Meridian}, a.] [1913 Webster] 1. Midday; noon. [1913 Webster] 2. Hence: The highest point, as of success, prosperity, or the like; culmination. [1913 Webster] I have touched the highest point of all… …   The Collaborative International Dictionary of English

  • Transit instrument — Transit Trans it, n. [L. transitus, from transire to go over: cf. F. transit. See {Transient}.] 1. The act of passing; passage through or over. [1913 Webster] In France you are now . . . in the transit from one form of government to another.… …   The Collaborative International Dictionary of English

  • declinometer — instrument for measuring magnetic declination Scientific Instruments …   Phrontistery dictionary

  • variometer — instrument for measuring magnetic declination Scientific Instruments …   Phrontistery dictionary

  • Compass — This article is about the direction finding instrument used in navigation. For other uses, see Compass (disambiguation). A simple dry magnetic pocket compass …   Wikipedia

  • telescope — /tel euh skohp /, n., adj., v., telescoped, telescoping. n. 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens… …   Universalium

  • Meridian circle — Groombridge transit circle of 1806 The meridian circle, transit circle, or transit telescope is an instrument for observing the time of stars passing the meridian, at the same time measuring its angular distance from the zenith. The idea of… …   Wikipedia

  • Sundial — A sundial is a device that measures time by the position of the Sun. In common designs such as the horizontal sundial, the sun casts a shadow from its style (a thin rod or a sharp, straight edge) onto a flat surface marked with lines indicating… …   Wikipedia

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