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Sijzi
Abu Sa'id Ahmed ibn Mohammed ibn Abd al-Jalil al-Sijzi (c. 945 - c. 1020, also known as al-Sinjari and al-Sijazi; fa, ابوسعید سجزی; Al-Sijzi is short for " Al-Sijistani") was an Iranian Muslim astronomer, mathematician, and astrologer. He is notable for his correspondence with al-Biruni and for proposing that the Earth rotates around its axis in the 10th century. He dedicated work to 'Adud al-Daula, who was probably his patron, and to the prince of Balkh. He also worked in Shiraz making astronomical observations from 969 to 970. Mathematics Al-Sijzi studied intersections of conic sections and circles. He replaced the old kinematical trisection of an angle by a purely geometric solution (intersection of a circle and an equilateral hyperbola.) Earth's rotation Al-Biruni tells us that Al-Sijzi invented an astrolabe, called "al-zūraqī", whose design was based on the idea that the Earth rotates: Al-Biruni also referred to Al-Sijzi as a prominent astronomer who d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Al-Biruni
Abu Rayhan Muhammad ibn Ahmad al-Biruni (973 – after 1050) commonly known as al-Biruni, was a Khwarazmian Iranian in scholar and polymath during the Islamic Golden Age. He has been called variously the "founder of Indology", "Father of Comparative Religion", "Father of modern geodesy", and the first anthropologist. Al-Biruni was well versed in physics, mathematics, astronomy, and natural sciences, and also distinguished himself as a historian, chronologist, and linguist. He studied almost all the sciences of his day and was rewarded abundantly for his tireless research in many fields of knowledge. Royalty and other powerful elements in society funded Al-Biruni's research and sought him out with specific projects in mind. Influential in his own right, Al-Biruni was himself influenced by the scholars of other nations, such as the Greeks, from whom he took inspiration when he turned to the study of philosophy. A gifted linguist, he was conversant in Khwarezmian, Persian, Ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Al-Biruni
Abu Rayhan Muhammad ibn Ahmad al-Biruni (973 – after 1050) commonly known as al-Biruni, was a Khwarazmian Iranian in scholar and polymath during the Islamic Golden Age. He has been called variously the "founder of Indology", "Father of Comparative Religion", "Father of modern geodesy", and the first anthropologist. Al-Biruni was well versed in physics, mathematics, astronomy, and natural sciences, and also distinguished himself as a historian, chronologist, and linguist. He studied almost all the sciences of his day and was rewarded abundantly for his tireless research in many fields of knowledge. Royalty and other powerful elements in society funded Al-Biruni's research and sought him out with specific projects in mind. Influential in his own right, Al-Biruni was himself influenced by the scholars of other nations, such as the Greeks, from whom he took inspiration when he turned to the study of philosophy. A gifted linguist, he was conversant in Khwarezmian, Persian, Ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Islamic Astronomy
Islamic astronomy comprises the Astronomy, astronomical developments made in the Islamic world, particularly during the Islamic Golden Age (9th–13th centuries), and mostly written in the Arabic language. These developments mostly took place in the Middle East, Central Asia, Al-Andalus, and North Africa, and later in the Far East and History of India, India. It closely parallels the genesis of other Islamic sciences in its assimilation of foreign material and the amalgamation of the disparate elements of that material to create a science with Islamic characteristics. These included Greek astronomy, Greek, Sassanid Empire, Sassanid, and Indian astronomy, Indian works in particular, which were translated and built upon. Islamic astronomy played a significant role in the revival of Byzantine science, Byzantine and Science in Medieval Western Europe, EuropeanSaliba (1999). astronomy following the Dark Ages (historiography), loss of knowledge during the early medieval period, notably ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Al-Sijistani
Al-Sijistani refers to people from the historic Sijistan region in present-day Sistan, the border region of eastern Iran and southwestern Afghanistan. Prominent people who have been called Al-Sijistani include: * Abu Da'ud Sulayman ibn Ash`ath al-Azadi al-Sijistani (817-888 CE), ("Abu Dawūd"), collector of ''hadith'' * Abu Yaqub Sijistani (died c. 971 CE), Neoplatonist and Ismaili missionary * Abu Sulayman Muhammad al-Sijistani (c. 932 - c. 1000 CE), Islamic philosopher, flourished in Baghdad * Al-Sijzi (c. 945 - c. 1020 CE), mathematician and astronomer * Masʽud ibn Muhammad Sijzi Masud ibn Muhammad Sijzi was a Persian physician who lived before 1334CE in eastern Iran. Little is known of the life of Masud ibn Muhammad al-Sijzi, only that he must have been working sometime before 1334CE. His only treatise, an Arabic medical ..., 14th-century Persian physician {{DEFAULTSORT:Sijistani Surnames Nisbas People from Sistan Ethonymic surnames Arabic-language surnames Persian- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earth's Rotation
Earth's rotation or Earth's spin is the rotation of planet Earth around its own Rotation around a fixed axis, axis, as well as changes in the orientation (geometry), orientation of the rotation axis in space. Earth rotates eastward, in retrograde and prograde motion, prograde motion. As viewed from the northern polar star Polaris, Earth turns counterclockwise. The North Pole, also known as the Geographic North Pole or Terrestrial North Pole, is the point in the Northern Hemisphere where Earth's axis of rotation meets its surface. This point is distinct from Earth's North Magnetic Pole. The South Pole is the other point where Earth's axis of rotation intersects its surface, in Antarctica. Earth rotates once in about 24 hours with respect to the Sun, but once every 23 hours, 56 minutes and 4 seconds with respect to other distant stars (#Stellar and sidereal day, see below). Earth's rotation is slowing slightly with time; thus, a day was shorter in the past. This is due to the tida ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shiraz
Shiraz (; fa, شیراز, Širâz ) is the List of largest cities of Iran, fifth-most-populous city of Iran and the capital of Fars province, Fars Province, which has been historically known as Pars (Sasanian province), Pars () and Persis. As of the 2016 national census, the population of the city was 1,565,572 people, and its built-up area with Sadra, Fars, Sadra was home to almost 1,800,000 inhabitants. A census in 2021 showed an increase in the city's population to 1,995,500 people. Shiraz is located in Southern Iran, southwestern Iran on the () seasonal river. Founded in the early Islamic period, the city has a moderate climate and has been a regional trade center for over a thousand years. The earliest reference to the city, as ''Tiraziš'', is on Elamite Clay tablet, clay tablets dated to 2000 BCE. The modern city was restored or founded by the Arabs, Arab Umayyad Caliphate in 693 CE and grew prominent under the successive Iranian peoples, Iranian Saffarid dynasty, Saffar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trisection Of An Angle
Angle trisection is a classical problem of straightedge and compass construction of ancient Greek mathematics. It concerns construction of an angle equal to one third of a given arbitrary angle, using only two tools: an unmarked straightedge and a compass. Pierre Wantzel proved in 1837 that the problem, as stated, is impossible to solve for arbitrary angles. However, although there is no way to trisect an angle ''in general'' with just a compass and a straightedge, some special angles can be trisected. For example, it is relatively straightforward to trisect a right angle (that is, to construct an angle of measure 30 degrees). It is possible to trisect an arbitrary angle by using tools other than straightedge and compass. For example, neusis construction, also known to ancient Greeks, involves simultaneous sliding and rotation of a marked straightedge, which cannot be achieved with the original tools. Other techniques were developed by mathematicians over the centuries. Because ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astrolabe
An astrolabe ( grc, ἀστρολάβος ; ar, ٱلأَسْطُرلاب ; persian, ستارهیاب ) is an ancient astronomical instrument that was a handheld model of the universe. Its various functions also make it an elaborate inclinometer and an analog calculation device capable of working out several kinds of problems in astronomy. In its simplest form it is a metal disc with a pattern of wires, cutouts, and perforations that allows a user to calculate astronomical positions precisely. Historically used by astronomers, it is able to measure the altitude above the horizon of a celestial body, day or night; it can be used to identify stars or planets, to determine local latitude given local time (and vice versa), to survey, or to triangulate. It was used in classical antiquity, the Islamic Golden Age, the European Middle Ages and the Age of Discovery for all these purposes. The astrolabe's importance comes not only from the early developments into the study of astron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
State University Of New York Press
The State University of New York (SUNY, , ) is a system of public colleges and universities in the State of New York. It is one of the largest comprehensive system of universities, colleges, and community colleges in the United States. Led by chancellor John B. King, the SUNY system has 91,182 employees, including 32,496 faculty members, and some 7,660 degree and certificate programs overall and a $13.08 billion budget. Its flagship universities are Stony Brook University and the University at Buffalo. SUNY's administrative offices are in Albany, the state's capital, with satellite offices in Manhattan and Washington, D.C. With 25,000 acres of land, SUNY's largest campus is SUNY College of Environmental Science and Forestry, which neighbors the State University of New York Upstate Medical University - the largest employer in the SUNY system with over 10,959 employees. The State University of New York was established in 1948 by Governor Thomas E. Dewey, through legislative i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hossein Nasr
Seyyed Hossein Nasr (; fa, سید حسین نصر, born April 7, 1933) is an Iranian philosopher and University Professor of Islamic studies at George Washington University. Born in Tehran, Nasr completed his education in Iran and the United States, earning a bachelor's degree in physics from Massachusetts Institute of Technology, a master's in geology and geophysics, and a doctorate in the history of science from Harvard University. He returned to his homeland in 1958, turning down teaching positions at MIT and Harvard, and was appointed a professor of philosophy and Islamic sciences at Tehran University. He held various academic positions in Iran, including vice-chancellor at Tehran University and President of Aryamehr University, and established the Imperial Iranian Academy of Philosophy at the request of Empress Farah Pahlavi, which soon became one of the most prominent centers of philosophical activity in the Islamic world. During his time in Iran, he studied with several ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
'Adud Al-Daula
Fannā (Panāh) Khusraw ( fa, پناه خسرو), better known by his laqab of ʿAḍud al-Dawla ( ar, عضد الدولة, "Pillar of the [Abbasid] Dynasty") (September 24, 936 – March 26, 983) was an emir of the Buyid dynasty, ruling from 949 to 983, and at his height of power ruling an empire stretching from Makran to Yemen and the shores of the Mediterranean Sea. He is widely regarded as the greatest monarch of the dynasty, and by the end of his reign he was the most powerful ruler in the Middle East. The son of Rukn al-Dawla, Fanna Khusraw was given the title of Adud al-Dawla by the List of Abbasid caliphs, Abbasid caliph in 948 when he was made emir of Fars Province, Fars after the death of his childless uncle Imad al-Dawla, after which Rukn al-Dawla became the senior emir of the Buyids. In 974 Adud al-Dawla was sent by his father to save his cousin Izz al-Dawla from a rebellion. After defeating the rebel forces, he claimed the emirate of Iraq for himself, and forced ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dictionary Of Scientific Biography
The ''Dictionary of Scientific Biography'' is a scholarly reference work that was published from 1970 through 1980 by publisher Charles Scribner's Sons, with main editor the science historian Charles Gillispie, from Princeton University. It consisted of sixteen volumes. It is supplemented by the ''New Dictionary of Scientific Biography''. Both these publications are included in a later electronic book, called the ''Complete Dictionary of Scientific Biography''. ''Dictionary of Scientific Biography'' The ''Dictionary of Scientific Biography'' is a scholarly English-language reference work consisting of biographies of scientists from antiquity to modern times, but excluding scientists who were alive when the ''Dictionary'' was first published. It includes scientists who worked in the areas of mathematics, physics, chemistry, biology, and earth sciences. The work is notable for being one of the most substantial reference works in the field of history of science, containing extens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
