Search results
Results from the WOW.Com Content Network
Brass astrolabes were an invention of Late Antiquity. The first Islamic astronomer reported as having built an astrolabe is Muhammad al-Fazari (late 8th century). [69] Astrolabes were popular in the Islamic world during the "Golden Age", chiefly as an aid to finding the qibla. The earliest known example is dated to 927/8 (AH 315).
Astrolabes were further developed in the medieval Islamic world, where Muslim astronomers introduced angular scales to the design, [19] adding circles indicating azimuths on the horizon. [20] It was widely used throughout the Muslim world, chiefly as an aid to navigation and as a way of finding the Qibla, the direction of Mecca.
Islamic – King identified four types of quadrants that were produced by Muslim astronomers. [6] The sine quadrant (Arabic: Rubul Mujayyab) – also known as the Sinecal Quadrant – was used for solving trigonometric problems and taking astronomical observations. It was developed by al-Khwarizmi in 9th century Baghdad and prevalent until the ...
In the history of astronomy, Islamic astronomy or Arabic astronomy refers to the developments made by Islamic astronomers. Islamic astronomy parallels that of other Islamic sciences in its assimilation of known works and development of these works.
Sine quadrant: A type of quadrant used by medieval Arabic astronomers, it was described by Muhammad ibn Mūsā al-Khwārizmī in 9th century Baghdad. [ 44 ] Scimitar : The curved sword or "scimitar" was widespread throughout the Middle East from at least the Ottoman period , with early examples dating to Abbasid era (9th century) Khurasan .
Astrolabes were adopted and further developed in the medieval Islamic world, where Muslim astronomers introduced angular scales to the design, [28] adding circles indicating azimuths on the horizon. [29] It was widely used throughout the Muslim world, chiefly as an aid to navigation and as a way of finding the Qibla, the direction of Mecca.
The sine quadrant was described by Muhammad ibn Mūsā al-Khwārizmī in 9th-century Baghdad, and was used throughout the medieval Islamic period to determine the proper times for Islamic prayer. [2] These instruments, with poor angular resolution, were not principally intended to function with stars at night as an astronomical measuring device.
These included ancient instruments such as the armillary sphere, paralactic ruler and astrolabe; medieval Muslim instruments such as the universal astrolabe, azimuthal and mural quadrants, and sextants; and several instruments he invented himself, including the mushabbaha bi'l manattiq, a framed sextant with cords for the determination of the ...