CharakaCharaka was one of the principal contributors to Ayurveda, a system of medicine and lifestyle developed in ancient India. He is known as a physician who edited the medical treatise entitled Charaka Samhita, one of the foundational texts of classical Indian medicine and Ayurveda, included under Brhat-Trayi. Charaka, also known as Charaka Muni or Agnivesa, was an ancient Indian physician and scholar who made significant contributions to the field of Ayurveda. Ayurveda is a traditional system of medicine that originated in India more than 5,000 years ago.
Ophthalmology in the medieval Islamic worldOphthalmology was one of the foremost branches in medieval Islamic medicine. The oculist or kahhal (کحال), a somewhat despised professional in Galen’s time, was an honored member of the medical profession by the Abbasid period, occupying a unique place in royal households. Medieval Islamic scientists (unlike their classical predecessors) considered it normal to combine theory and practice, including the crafting of precise instruments, and therefore found it natural to combine the study of the eye with the practical application of that knowledge.
Sinbad the SailorSinbad the Sailor (ˈsɪnbæd; Sindibādu l-Bahriyy or Sindbad) is a fictional mariner and the hero of a story-cycle. He is described as hailing from Baghdad during the early Abbasid Caliphate (8th and 9th centuries A.D.). In the course of seven voyages throughout the seas east of Africa and south of Asia, he has fantastic adventures in magical realms, encountering monsters and witnessing supernatural phenomena.
History of scientific methodThe history of scientific method considers changes in the methodology of scientific inquiry, as distinct from the history of science itself. The development of rules for scientific reasoning has not been straightforward; scientific method has been the subject of intense and recurring debate throughout the history of science, and eminent natural philosophers and scientists have argued for the primacy of one or another approach to establishing scientific knowledge.
House of WisdomThe House of Wisdom (Bayt al-Ḥikmah), also known as the Grand Library of Baghdad, was a major Abbasid public academy and intellectual center in Baghdad and one of the world's largest public libraries during the Islamic Golden Age. The House of Wisdom was founded either as a library for the collections of the Caliph Harun al-Rashid in the late 8th century or was a private collection created by al-Mansur (r. 754–775) to house rare books and collections of poetry in Arabic.
Abbasid dynastyThe Abbasid dynasty or Abbasids (Banu al-ʿAbbās) were an Arab dynasty that ruled the Abbasid Caliphate between 750 and 1258. They were from the Qurayshi Hashimid clan of Banu Abbas, descended from Abbas ibn Abd al-Muttalib. The Abbasid Caliphate is divided into three main periods: Early Abbasid era (750–861), Middle Abbasid era (861–936) and Later Abbasid era (936–1258). A cadet branch of the dynasty also ruled as ceremonial rulers for the Mamluk Sultanate as Caliph (1261–1517), until their conquest by the Ottoman Empire.
Tusi coupleThe Tusi couple (also known as Tusi's Mechanism) is a mathematical device in which a small circle rotates inside a larger circle twice the diameter of the smaller circle. Rotations of the circles cause a point on the circumference of the smaller circle to oscillate back and forth in linear motion along a diameter of the larger circle. The Tusi couple is a 2-cusped hypocycloid.
Latin translations of the 12th centuryLatin translations of the 12th century were spurred by a major search by European scholars for new learning unavailable in western Europe at the time; their search led them to areas of southern Europe, particularly in central Spain and Sicily, which recently had come under Christian rule following their reconquest in the late 11th century. These areas had been under Muslim rule for a considerable time, and still had substantial Arabic-speaking populations to support their search.
Toledo School of TranslatorsThe Toledo School of Translators (Escuela de Traductores de Toledo) is the group of scholars who worked together in the city of Toledo during the 12th and 13th centuries, to translate many of the Judeo-Islamic philosophies and scientific works from Classical Arabic into Medieval Latin. The School went through two distinct periods separated by a transitional phase. The first was led by Archbishop Raymond of Toledo in the 12th century, who promoted the translation of philosophical and religious works, mainly from classical Arabic into Latin.
IjazahAn ijazah (الإِجازَة, "permission", "authorization", "license"; plural: ijazahs or ijazat) is a license authorizing its holder to transmit a certain text or subject, which is issued by someone already possessing such authority. It is particularly associated with transmission of Islamic religious knowledge. The license usually implies that the student has acquired this knowledge from the issuer of the ijaza through first-hand oral instruction, although this requirement came to be relaxed over time.
