New Persian Original bdg. HC. Roy. 8vo. (24 x 17 cm). Texts in entirely in Persian with a bilingual title in English and Persian on the cover. [172], 200, [12] p., b/w ills. and facsimiled pages. Al-ta'rîf bi-tabaqât al-umam: The world history of sciences & scholars up to the 5th century A.H.= At'tarîf bit'tabaqât: Tarikh-e jihânî ulûm wa dânishmendân tâqrîn chahbam bahrabî. Edited by Gholamreza Jamshidnezhad Aval. Said Al-Andalûsî, (1029-1070), was an Arab qadi of Toledo in Muslim Spain, who wrote on the history of science, philosophy and thought. He practised as a mathematical scientist with a special interest in astronomy, and compiled a famous biographic encyclopedia of science that quickly became popular in the empire and the Islamic East. Tabaqat al-Umam is a classification of the sciences and of the nations (The only extant work), written in 1068 two years before his death. It was composed in 1068 is an early "history of science" that comprises biographies of the scientists and scientific achievements of eight nations. In the field of nations are the Indians, Persians, Chaldeans, Egyptians, Greeks, Byzantines, Arabs and Jews (in contrast to others not disposed, such as Norsemen, Chinese, Africans, Russians, Alains and Turks). Sâ'id offers an account of the individual contribution each nation makes to the various sciences of arithmetic, astronomy, and medicine, etc., and of the earliest scientists and philosophers, from the Greeks, - Pythagoras, Socrates, Plato and Aristotle - to the Roman and Christian scholars of the 9th and 10th centuries in Baghdad. The second half of the book contains Arab-Islamic contributions to the fields of logic, philosophy, geometry, the development of Ptolemaic astronomy, observational methods, calculations in trigonometry and mathematics to determine the length of the year, the eccentricity of the sun's orbit, and the construction of astronomical tables, etc.
