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prismatic astrolabe

См. также в других словарях:

  • prismatic astrolabe — noun : a portable instrument consisting of a small telescope, a 60 degree prism, and a mercury reflecting basin by which determinations of time, latitude, and azimuth may be obtained from star observations …   Useful english dictionary

  • 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

  • André-Louis Danjon — Infobox Scientist name = André Louis Danjon birth date = April 6, 1890 birth place = Caen death date = April 21, 1967 death place = Paris residence = citizenship = nationality = French ethnicity = field = astronomy work institutions = known for …   Wikipedia

  • Danjon, André-Louis — ▪ French astronomer born April 6, 1890, Caen, France died April 21, 1967, Paris       French astronomer noted for his important developments in astronomical instruments and for his studies of the Earth s rotation.       Danjon served in the… …   Universalium

  • 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

  • surveying — /seuhr vay ing/, n. 1. the science or scientific method of making surveys of land. 2. the occupation of one who makes land surveys. 3. the act of one who surveys: The surveying required nearly two days. [1425 75; late ME: act of examining… …   Universalium

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