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Look up:
astrolabe
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Astrolabe
Instrument used for celestial navigation. A large collection (more than 10) is displayed at the Museu de Marinha in Lisbon. Photo of astrolabe from the Batavia, courtesy Western Australia Maritime Museum. Illustration of usage.
Found op http://www.abc.se/~pa/uwa/glossary.htm
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astrolabe
[n] - an early form of sextant
Found op http://www.webdictionary.co.uk/definition.php?query=astrolabe
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Astrolabe
An ancient instrument used for measuring the altitudes of celestial objects.
Found op http://www.delscope.demon.co.uk/astronomy/glossary.htm
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Astrolabe
An astrolabe is an instrument that was used to determine the altitude of objects in the sky (like the sun or stars). It was first used around 200 B.C. by astronomers in Greece. The astrolabe was replaced by the sextant. See also: Altitude.
Found op http://www.diracdelta.co.uk/science/source/a/s/astrolabe/source.html
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astrolabe
A circular instrument with a moveable arm for calculating the altitude of the sun and plotting the positions of the stars, for astronomical and navigational purposes. Astrolabes were used from the 2nd century, and although obsolete in Europe by the 18thC, forgeries continued to be made in the Middle...
Found op http://www.encyclo.co.uk/visitor-contributions.php
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Astrolabe
As'tro·labe (ăs'tro*lāb) noun [ Middle English astrolabie , astrilabe , Old French astrelabe , French astrolabe , Late Latin astrolabium , from Greek 'astrola`bon ; 'a`stron star + ...
Found op http://www.encyclo.co.uk/webster/A/137
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astrolabe
1. <astronomy> An instrument for observing or showing the positions of the stars. It is now disused. ... Among the ancients, it was essentially the armillary sphere. A graduated circle with sights, for taking altitudes at sea, was called an astrolabe in the 18th century. It is now superseded b...
Found op http://www.mondofacto.com/facts/dictionary?astrolabe
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astrolabe
noun an early form of sextant
Found op http://wordnetweb.princeton.edu/perl/webwn?s=astrolabe
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Astrolabe
• (n.) A stereographic projection of the sphere on the plane of a great circle, as the equator, or a meridian; a planisphere. • (n.) An instrument for observing or showing the positions of the stars. It is now disused.
Found op http://thinkexist.com/dictionary/meaning/astrolabe/
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Astrolabe
(from the article `La Pérouse, Jean-François de Galaup, Count de`) Commanding the ship La Boussole, which was accompanied by the Astrolabe, La Pérouse sailed from France on Aug. 1, 1785. After rounding Cape Horn, one ...
Found op http://www.britannica.com/eb/a-z/a/116
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astrolabe
any of a type of early scientific instrument used for reckoning time and for observational purposes. One widely employed variety, the planispheric ... [6 related articles]
Found op http://www.britannica.com/eb/a-z/a/116
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Astrolabe
An astrolabe (ἀστρολάβον astrolabon, "star-taker") is an elaborate inclinometer, historically used by astronomers, navigators, and astrologers. Its many uses include locating and predicting the positions of the Sun, Moon, planets, and stars, determining local time given local latitude an...
Found op http://en.wikipedia.org/wiki/Astrolabe
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astrolabe
An Arabic and medieval European sighting instrument on an altazimuth mounting, used to determine the elevation above the horizon of celestial objects. It comprises two or more flat, metal, calibrated disks, attached so that both or all can rotate independently. For early navigators and astronomers i...
Found op http://www.daviddarling.info/encyclopedia/A/astrolabe.html
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astrolabe
astrolabe (ăs'trulāb) , instrument probably used originally for measuring the altitudes of heavenly bodies and for determining their positions and movements. Although its origin is ancient and obscure, its invention is frequently ascribed either to Hipparchus or to Apollonius of Perg...
Found op http://www.infoplease.com/ce6/sci/A0805131.html
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Astrolabe
An astrolabe is an instrument used to make astronomical measurements, the term is now especially applied to an instrument used for measuring the altitudes of the stars. The Astrolabe was superseded by the quadrant and sextant. The name was also formerly given to an armillary sphere.
Found op http://www.probertencyclopaedia.com/browse/GA.HTM
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astrolabe
Ancient navigational instrument, forerunner of the sextant. Astrolabes usually consisted of a flat disc with a sighting rod that could be pivoted to point at the Sun or bright stars. From the altitude of the Sun or star above the horizon, the local time could be estimated
Found op http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0010259.html
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Astrolabe
[disambiguation] An astrolabe is an astronomical instrument. Astrolabe may also refer to: ...
Found op http://en.wikipedia.org/wiki/Astrolabe_(disambiguation)
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astrolabe
1) Old navigation instrument 2) Sextant
Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/astrolabe/1
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