Search results
Results from the WOW.Com Content Network
An astrolabe (‹See Tfd› Greek: ἀστρολάβος astrolábos, 'star-taker'; Arabic: ٱلأَسْطُرلاب al-Asṭurlāb; Persian: ستارهیاب Setāreyāb) is an astronomical instrument dating to ancient times. It serves as a star chart and physical model of visible half-dome of the sky.
The meaning of ASTROLABE is a compact instrument used to observe and calculate the position of celestial bodies before the invention of the sextant. The Astrolabe and the Stars.
astrolabe, any of a type of early scientific instrument used for reckoning time and for observational purposes. One widely employed variety, the planispheric astrolabe, enabled astronomers to calculate the position of the Sun and prominent stars with respect to both the horizon and the meridian.
The Astrolabe is an astronomical instrument used from around the 6th century to measure time and position by determining the altitude of heavenly bodies like the Sun and certain stars.
An astrolabe indicates the date and position of the moon, sun, and earth, as well as the stars.
ASTROLABE meaning: 1. a circular device used from ancient times until about the 18th century for measuring the…. Learn more.
astrolabe, Type of early scientific instrument used for reckoning time and for observational purposes. Astrolabes can be traced to the 6th century ad; they came into wide use in Europe and the Islamic world in the early Middle Ages and were adopted by mariners by the mid-15th century.
What Exactly is an Astrolabe? At its heart, the astrolabe consists of a large circular metal plate called the mater that sits vertically on a stand. Both sides of the plate are etched with calibrated circles, lines, and scales that perform various functions. A rotating rete with star pointers sits on top of the mater.
Astrolabe definition: an astronomical instrument for taking the altitude of the sun or stars and for the solution of other problems in astronomy and navigation. See examples of ASTROLABE used in a sentence.
an astronomical instrument for taking the altitude of the sun or stars and for the solution of other problems in astronomy and navigation: used by Greek astronomers from about 200 b.c. and by Arab astronomers from the Middle Ages until superseded by the sextant