- almucantar staff
- noun
: an ancient instrument having an arc of 15 degrees and used at sea to take observations of the sun's amplitude and to find the variation of the compass
Useful english dictionary. 2012.
almucantar staff
Look at other dictionaries:
Almucantar — An Almucantar, also spelled almucantarat or almacantara, is a circle on the celestial sphere parallel to the horizon. Two stars that lie the same almucantar have the same altitude.Almucantar staffAn almucantar staff is an instrument chiefly used… … Wikipedia
Almucantar — Al mu*can tar, n. [F. almucantarat, almicantarat, ultimately fr. Ar. al muqantar[=a]t, pl., fr. qantara to bend, arch.] (Astron.) A small circle of the sphere parallel to the horizon; a circle or parallel of altitude. Two stars which have the… … The Collaborative International Dictionary of English
astronomer's staff — noun : almucantar staff … Useful english dictionary
Almucanter staff — Almucantar Al mu*can tar, n. [F. almucantarat, almicantarat, ultimately fr. Ar. al muqantar[=a]t, pl., fr. qantara to bend, arch.] (Astron.) A small circle of the sphere parallel to the horizon; a circle or parallel of altitude. Two stars which… … The Collaborative International Dictionary of English
Backstaff — Not to be confused with Ballastella. Davis quadrant from the beginning of the 18th century The backstaff or back quadrant is a navigational instrument that was used to measure the altitude of a celestial body, in particular the sun or moon. When… … Wikipedia
Inventions in medieval Islam — A significant number of inventions were developed in the medieval Islamic world, a geopolitical region that has at various times extended from Al Andalus and Africa in the west to the Indian subcontinent and Malay Archipelago in the east.… … Wikipedia
Timeline of Islamic science and engineering — This timeline of Islamic science and engineering covers the general development of science and technology in the Islamic world during the Islamic Golden Age, usually dated from the 7th to 16th centuries.From the 17th century onwards, the advances … Wikipedia
