An astrolabe is a historical astronomical instrument used by classical astronomers, navigators, and astrologers. There is often confusion between the astrolabe and the mariner' s astrolabe. While the astrolabe could be useful for determining latitude on land, it was an awkward instrument for use on the heaving deck of a ship or in wind. The mariner' s astrolabe was developed to address these issues. In the European nations, astrolabes were used to construct horoscopes, for astronomical studies, and for navigation. In the medieval Islamic world, they were introduced by Arabs and used primarily for astronomical studies, as well as in other areas as diverse as astrology, geography, navigation, Qibla, Salah prayers, surveying, and timekeeping. Its many uses include locating and predicting the positions of the Sun, Moon, planets, and stars; determining local time (given local latitude) and vice-versa; surveying; and triangulation.
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Книга по Требованию
|French icebreaker Astrolabe Книга по Требованию Frederic P. M. |
Among its duties are bring personnel and supplies to the Dumont d' Urville research station in Antarctica. The vessel has been making regular voyages between Hobart and the Dumont D’Urville research station for fifteen years. High Quality Content by WIKIPEDIA articles! The icebreaker Astrolabe is a French research vessel.