Muḥammad ibn Jabir al-Harrani al-Battani was Associate in Nursing Arab Muslim uranologist, astrologer, and scientist. He introduced variety of pure mathematics relations, and his Kitāb az-Zīj was oft quoted by several medieval astronomers, together with Copernicus.Little is understood regarding al-Battānī's life beside that he was born in Harran close to Urfa, in higher Mesopotamia, that is currently in Turkey, and his father was a far-famed maker of scientific instruments.His epithet aṣ-Ṣabi’ suggests that among his ancestry were members of the Sabian sect; but, his full name indicates that he was Muslim.Some western historians state that he's of noble origin, like Associate in Nursing Arab blue blood, however ancient Arabic biographers build no mention of this.He lived and worked in ar-Raqqah, a town in north central Syrian Arab Republic. One of al-Battānī's known achievements in uranology was the determination of the equinoctial year as being three hundred and sixty five days, 5 hours, forty six minutes and twenty four seconds.
Al-Battānī discovered that the direction of the Sun's apogee, as recorded by Ptolemy, was dynamical.(In trendy Copernican terms this can be as a result of the dynamical direction of the eccentricity vector of the Earth's orbit). He conjointly introduced, most likely severally of the fifth century Indian uranologist Aryabhata, the employment of sines in calculation, and part that of tangents.He conjointly calculated the values for the precession of the equinoxes (54.5" each year, or 1° in sixty six years) and also the obliquity of the great circle (23° 35').He used a homogenous rate for precession in his tables, selecting to not adopt the idea of dread attributed to his colleague Thabit ibn Qurra. Al-Battānī's work is taken into account instrumental within the development of science and uranology.Copernicus mentioned his financial obligation to al-Battānī and quoted him within the book that initiated the Copernican Revolution, the Delaware Revolutionibus Orbium Coelestium. Al-Battānī was oft quoted by Tycho Brahe, Riccioli, among others. astronomer and stargazer showed interest in a number of his observations,and his information continues to be utilized in geology.
Muḥammad ibn Jabir al-Harrani al-Battani