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Korea: Hong Daeyong (1731 - 1783), philosopher, astronomer and mathematician during the late Joseon Kingdom (1392 - 1897). Also known as Damheon, Hong was an early promoter of Korean industrialization and the development of trade by using Western technologies.
Johannes Kepler (December 27, 1571 – November 15, 1630) was a German mathematician, astronomer, and astrologer. A key figure in the 17th century scientific revolution, he is best known for his laws of planetary motion, based on his works Astronomia nova, Harmonices Mundi, and Epitome of Copernican Astronomy. These works also provided one of the foundations for Isaac Newton's theory of universal gravitation.<br/><br/> During his career, Kepler was a mathematics teacher at a seminary school in Graz, Austria, where he became an associate of Prince Hans Ulrich von Eggenberg. Later he became an assistant to astronomer Tycho Brahe, and eventually the imperial mathematician to Emperor Rudolf II and his two successors Matthias and Ferdinand II. He was also a mathematics teacher in Linz, Austria, and an adviser to General Wallenstein. Additionally, he did fundamental work in the field of optics, invented an improved version of the refracting telescope (the Keplerian Telescope), and mentioned the telescopic discoveries of his contemporary Galileo Galilei.
Poland: Engraved portrait of Nicolaus Copernicus, Polish astronomer and mathematician, c. 1850. Nicolaus Copernicus (19 February 1473 - 24 May 1543) was a Renaissance astronomer and mathematician from Royal Prussia, part of the Kingdom of Poland. Copernicus was a polyglot and polymath, and obtained a doctorate in canon law. Throughout his life, he served also as a governor, diplomat, economist, physician, translator and classic scholar.
Halley's Comet or Comet Halley is a short-period comet visible from Earth every 75–76 years. Halley is the only short-period comet that is clearly visible to the naked eye from Earth, and the only naked-eye comet that might appear twice in a human lifetime. Halley last appeared in the inner Solar System in 1986 and will next appear in mid-2061.
Galileo Galilei (15 Feb. 1564—8 Jan. 1642) was an Italian physicist, mathematician, philosopher and astronomer who played a pivotal role in establishing modern science at a time when contradiction of religion was considered heresy. It was as an astronomer that he was most controversial. Galileo developed telescopes that confirmed the phases of Venus, and the discovery of the four largest satellites of Jupiter (named the Galilean moons in his honour), as well as sunspots.<br/><br/> In 1610, while a majority of philosophers and astronomers still subscribed to the geocentric opinion that the Earth was the centre of the universe, Galileo came out in support of Copernicus' heliocentric view that the Sun was at the center of the solar system.<br/><br/> Galileo's opinions were met with outrage and bitter opposition, and he was denounced to the Roman Inquisition. In February 1616, although he had been cleared of any offence, the Catholic Church nevertheless condemned heliocentrism as 'false and contrary to [Christian] Scripture' and forced Galileo to renounce his scientific conclusions.<br/><br/> However, in 1632, Galileo published 'Dialogue Concerning the Two Chief World Systems', in which he again defended heliocentrism. He was tried by the Inquisition, found 'vehemently suspect of heresy', forced to recant, and spent the rest of his life under house arrest.
Johannes Kepler (December 27, 1571 – November 15, 1630) was a German mathematician, astronomer, and astrologer. A key figure in the 17th century scientific revolution, he is best known for his laws of planetary motion, based on his works <i>Astronomia nova</i>, <i>Harmonices Mundi</i>, and <i>Epitome of Copernican Astronomy</i>. These works also provided one of the foundations for Isaac Newton's theory of universal gravitation.<br/><br/> During his career, Kepler was a mathematics teacher at a seminary school in Graz, Austria, where he became an associate of Prince Hans Ulrich von Eggenberg. Later he became an assistant to astronomer Tycho Brahe, and eventually the imperial mathematician to Emperor Rudolf II and his two successors Matthias and Ferdinand II. He was also a mathematics teacher in Linz, Austria, and an adviser to General Wallenstein. Additionally, he did fundamental work in the field of optics, invented an improved version of the refracting telescope (the Keplerian Telescope), and mentioned the telescopic discoveries of his contemporary Galileo Galilei.
Halley's Comet or Comet Halley is a short-period comet visible from Earth every 75–76 years. Halley is the only short-period comet that is clearly visible to the naked eye from Earth, and the only naked-eye comet that might appear twice in a human lifetime. Halley last appeared in the inner Solar System in 1986 and will next appear in mid-2061.
Galileo Galilei (15 Feb. 1564—8 Jan. 1642) was an Italian physicist, mathematician, philosopher and astronomer who played a pivotal role in establishing modern science at a time when contradiction of religion was considered heresy. It was as an astronomer that he was most controversial. Galileo developed telescopes that confirmed the phases of Venus, and the discovery of the four largest satellites of Jupiter (named the Galilean moons in his honour), as well as sunspots.<br/><br/> In 1610, while a majority of philosophers and astronomers still subscribed to the geocentric opinion that the Earth was the centre of the universe, Galileo came out in support of Copernicus' heliocentric view that the Sun was at the center of the solar system.<br/><br/> Galileo's opinions were met with outrage and bitter opposition, and he was denounced to the Roman Inquisition. In February 1616, although he had been cleared of any offence, the Catholic Church nevertheless condemned heliocentrism as 'false and contrary to [Christian] Scripture' and forced Galileo to renounce his scientific conclusions.<br/><br/> However, in 1632, Galileo published 'Dialogue Concerning the Two Chief World Systems', in which he again defended heliocentrism. He was tried by the Inquisition, found 'vehemently suspect of heresy', forced to recant, and spent the rest of his life under house arrest.
Nicolaus Copernicus (German: Nikolaus Kopernikus; 19 February 1473 – 24 May 1543) was a Renaissance mathematician and astronomer who formulated a model of the universe that placed the Sun rather than the Earth at its center. The publication of this model in his book <i>De revolutionibus orbium coelestium</i> (On the Revolutions of the Celestial Spheres) just before his death in 1543 is considered a major event in the history of science, triggering the Copernican Revolution and making an important contribution to the Scientific Revolution.<br/><br/> Copernicus was born and died in Royal Prussia, a region that had been a part of the Kingdom of Poland since 1466. He was a polyglot and polymath, obtaining a doctorate in canon law and also practising as a physician, classics scholar, translator, governor, diplomat and economist.
Galileo Galilei (15 Feb. 1564—8 Jan. 1642) was an Italian physicist, mathematician, philosopher and astronomer who played a pivotal role in establishing modern science at a time when contradiction of religion was considered heresy. It was as an astronomer that he was most controversial. Galileo developed telescopes that confirmed the phases of Venus, and the discovery of the four largest satellites of Jupiter (named the Galilean moons in his honour), as well as sunspots.<br/><br/> In 1610, while a majority of philosophers and astronomers still subscribed to the geocentric opinion that the Earth was the centre of the universe, Galileo came out in support of Copernicus' heliocentric view that the Sun was at the center of the solar system.<br/><br/> Galileo's opinions were met with outrage and bitter opposition, and he was denounced to the Roman Inquisition. In February 1616, although he had been cleared of any offence, the Catholic Church nevertheless condemned heliocentrism as 'false and contrary to [Christian] Scripture' and forced Galileo to renounce his scientific conclusions.<br/><br/> However, in 1632, Galileo published 'Dialogue Concerning the Two Chief World Systems', in which he again defended heliocentrism. He was tried by the Inquisition, found 'vehemently suspect of heresy', forced to recant, and spent the rest of his life under house arrest.
Johann Adam Schall von Bell, Chinese name Tang Ruowang (May 1, 1592 – August 15, 1666) was a German Jesuit and astronomer. He spent most of his life as a missionary in China and became an adviser to the Shunzhi Emperor of the Qing dynasty.
Leonhard Euler (15 April 1707 – 18 September 1783) was a Swiss mathematician, physicist, astronomer, logician and engineer who made important and influential discoveries in many branches of mathematics like infinitesimal calculus and graph theory, while also making pioneering contributions to several branches such as topology and analytic number theory. He also introduced much of the modern mathematical terminology and notation, particularly for mathematical analysis, such as the notion of a mathematical function. He is also known for his work in mechanics, fluid dynamics, optics, astronomy, and music theory.<br/><br/> Euler was one of the most eminent mathematicians of the 18th century, and is held to be one of the greatest in history. He is also widely considered to be the most prolific mathematician of all time. His collected works fill 60 to 80 quarto volumes, more than anybody in the field. He spent most of his adult life in St. Petersburg, Russia, and in Berlin, then the capital of Prussia.
Richard of Wallingford (1292–1336) was a catholic monk and English mathematician who made major contributions to astronomy and horology while serving as abbot of St Albans Abbey in Hertfordshire.
Leonhard Euler (15 April 1707 – 18 September 1783) was a Swiss mathematician, physicist, astronomer, logician and engineer who made important and influential discoveries in many branches of mathematics like infinitesimal calculus and graph theory, while also making pioneering contributions to several branches such as topology and analytic number theory. He also introduced much of the modern mathematical terminology and notation, particularly for mathematical analysis, such as the notion of a mathematical function. He is also known for his work in mechanics, fluid dynamics, optics, astronomy, and music theory.<br/><br/> Euler was one of the most eminent mathematicians of the 18th century, and is held to be one of the greatest in history. He is also widely considered to be the most prolific mathematician of all time. His collected works fill 60 to 80 quarto volumes, more than anybody in the field. He spent most of his adult life in St. Petersburg, Russia, and in Berlin, then the capital of Prussia.
Ole Christensen Rømer (25 September 1644 – 19 September 1710) was a Danish astronomer who in 1676 made the first quantitative measurements of the speed of light.
Giovanni Virginio Schiaparelli (14 March 1835 – 4 July 1910) was an Italian astronomer and science historian.<br/><br/> He was educated at the University of Turin, and later studied at Berlin Observatory, under Encke. In 1859–1860 he worked in Pulkovo Observatory and then worked for over forty years at Brera Observatory. He was also a senator of the Kingdom of Italy, a member of the Accademia dei Lincei, the Accademia delle Scienze di Torino and the Regio Istituto Lombardo, and is particularly known for his studies of Mars.
Avempace (c. 1085 – 1138) is the Latinate form of Ibn Bajja, full name Abu Bakr Muḥammad Ibn Yahya ibn as-Saiigh at-Tujibi Ibn Bajja al-Tujibi, a medieval Andalusian Arab. His writings include works regarding astronomy, physics, and music, as well as philosophy, medicine, botany, and poetry.<br/><br/> He was the author of the <i>Kitab al-Nabat</i> ('The Book of Plants'), a popular work on botany, which defined the sex of plants. His philosophic ideas had a clear effect on Ibn Rushd (Averroes) and Albertus Magnus. Most of his writings and books were not completed (or well-organized) because of his early death. He had a vast knowledge of medicine, mathematics and astronomy. His main contribution to Islamic philosophy is his idea on soul phenomenology, which was never completed.
Christiaan Huygens (14 April 1629 – 8 July 1695) was a prominent Dutch mathematician and scientist. He is known particularly as an astronomer, physicist, probabilist and horologist.<br/><br/> Huygens was a leading scientist of his time. His work included early telescopic studies of the rings of Saturn and the discovery of its moon Titan, the invention of the pendulum clock and other investigations in timekeeping. He published major studies of mechanics and optics, and a pioneer work on games of chance.
An astrolabe (Persian: اسطرلاب‎, Greek: ἀστρολάβος astrolabos, 'star-taker') is an elaborate inclinometer, historically used by astronomers, navigators, and astrologers. Its many uses include locating and predicting the positions of the Sun, Moon, planets, and stars, determining local time given local latitude and vice-versa, surveying, triangulation, and to cast horoscopes.<br/><br/> It was used in classical antiquity, the Islamic Golden Age, the European Middle Ages and Renaissance for all these purposes. In the Islamic world, it was also used to calculate the Qibla (direction of Mecca) and to find the times for salat / namaaz, prayers.<br/><br/> There is often confusion between the astrolabe and the mariner's astrolabe. While the astrolabe could be useful for determining latitude on land, it was an awkward instrument for use on the heaving deck of a ship or in wind. The mariner's astrolabe was developed to solve these problems.
'Abd al-Rahman al-Sufi (Persian: عبدالرحمن صوفی) (December 7, 903 – May 25, 986) was a Persian astronomer also known as 'Abd ar-Rahman as-Sufi, or 'Abd al-Rahman Abu al-Husayn, 'Abdul Rahman Sufi, 'Abdurrahman Sufi and known in the west as Azophi; the lunar crater Azophi and the minor planet 12621 Alsufi are named after him. Al-Sufi published his famous Book of Fixed Stars in 964, describing much of his work, both in textual descriptions and pictures.
Omar Khayyám (1048–1131; Persian: ‏عمر خیام) was a Persian polymath: philosopher, mathematician, astronomer and poet. He also wrote treatises on mechanics, geography, mineralogy, music, climatology and theology.<br/><br/> Born in Nishapur, at a young age he moved to Samarkand and obtained his education there, afterwards he moved to Bukhara and became established as one of the major mathematicians and astronomers of the medieval period. He is the author of one of the most important treatises on algebra written before modern times, the Treatise on Demonstration of Problems of Algebra, which includes a geometric method for solving cubic equations by intersecting a hyperbola with a circle. He contributed to a calendar reform.<br/><br/> His significance as a philosopher and teacher, and his few remaining philosophical works, have not received the same attention as his scientific and poetic writings. Zamakhshari referred to him as 'the philosopher of the world'. Many sources have testified that he taught for decades the philosophy of Ibn Sina in Nishapur where Khayyám was born and buried and where his mausoleum today remains a masterpiece of Iranian architecture visited by many people every year.
Abū ʿAbdallāh Muḥammad ibn Mūsā al-Khwārizmī, earlier transliterated as Algoritmi or Algaurizin, (c. 780 – c. 850) was a Persian mathematician, astronomer and geographer, a scholar in the House of Wisdom in Baghdad.<br/><br/> In the twelfth century, Latin translations of his work on the Indian numerals, introduced the decimal positional number system to the Western world. His Compendious Book on Calculation by Completion and Balancing presented the first systematic solution of linear and quadratic equations in Arabic. In Renaissance Europe, he was considered the original inventor of algebra, although we now know that his work is based on older Indian or Greek sources. He revised Ptolemy's Geography and wrote on astronomy and astrology.<br/><br/> Some words reflect the importance of al-Khwarizmi's contributions to mathematics. 'Algebra' is derived from al-jabr, one of the two operations he used to solve quadratic equations. Algorism and algorithm stem from Algoritmi, the Latin form of his name.
Islamic astronomy comprises the astronomical developments made in the Islamic world, particularly during the Islamic Golden Age (8th–15th 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 India.<br/><br/> 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, Sassanid, and Indian works in particular, which were translated and built upon. In turn, Islamic astronomy later had a significant influence on Indian, Byzantine and European astronomy (through Latin translations of the 12th century) as well as Chinese astronomy and Malian astronomy.<br/><br/> A significant number of stars in the sky, such as Aldebaran and Altair, and astronomical terms such as alhidade, azimuth, and almucantar, are still referred to by their Arabic names. A large corpus of literature from Islamic astronomy remains today, numbering approximately 10,000 manuscripts scattered throughout the world, many of which have not been read or catalogued.
Abū ʿAlī al-Ḥasan ibn al-Ḥasan ibn al-Haytham (Arabic: أبو علي، الحسن بن الحسن بن الهيثم, Persian: ابن هیثم, Latinized: Alhacen or Alhazen, 965 in Basra – c. 1040 in Cairo) was a Muslim, Persian or Arab scientist and polymath. He is frequently referred to as Ibn al-Haytham, and sometimes as al-Basri (Arabic: البصري), after his birthplace in the city of Basra.<br/><br/> Alhazen made significant contributions to the principles of optics, as well as to physics, astronomy, mathematics, ophthalmology, philosophy, visual perception, and to the scientific method. He was also nicknamed Ptolemaeus Secundus ('Ptolemy the Second') or simply 'The Physicist' in medieval Europe. Alhazen wrote insightful commentaries on works by Aristotle, Ptolemy, and the Greek mathematician Euclid.<br/><br/> Born circa 965, in Basra, Iraq, he lived mainly in Cairo, Egypt, dying there at age 76. Over-confident about practical application of his mathematical knowledge, he assumed that he could regulate the floods of the Nile. After being ordered by Al-Hakim bi-Amr Allah, the sixth ruler of the Fatimid caliphate, to carry out this operation, he quickly perceived the impossibility of what he was attempting to do, and retired from engineering.<br/><br/> Fearing for his life, he feigned madness and was placed under house arrest, during and after which he devoted himself to his scientific work until his death.
Abu Yahya Zakariya' ibn Muhammad al-Qazwini (1203-1283) was a Persian physician, astronomer, and geographer from the Persian town of Qazvin. He served as legal expert and judge (qadi) in several localities in Persia and at Baghdad. He travelled around in Mesopotamia and Syria, and finally entered the circle patronized by the governor of Baghdad, ‘Ata-Malik Juwayni (d. 1283 CE).<br/><br/> Al-Qazwini's most famous work was an Arabic cosmography entitled 'Aja'ib al-makhluqat wa-ghara'ib al-mawjudat, or 'Marvels of Creatures and Strange Things in Existence'. This treatise, frequently illustrated, was immensely popular and is preserved today in many copies. It was translated into Persian and Turkish.<br/><br/> Frankincense, also called olibanum (Arabic: lubbān), is an aromatic resin obtained from trees of the genus Boswellia, particularly Boswellia sacra. It is used in incense and perfumes.<br/><br/> There are four main species of Boswellia which produce true frankincense and each type of resin is available in various grades. The grades depend on the time of harvesting, and the resin is hand-sorted for quality.
Father Ferdinand Verbiest (1623-1688) was a Flemish Jesuit missionary in China during the Qing dynasty. He proved to the court of Kangxi Emperor that European astronomy was more accurate than Chinese astronomy.<br/><br/> He then corrected the Chinese calendar and was later asked to rebuild and re-equip the Beijing Ancient Observatory, being given the role of Head of the Mathematical Board and Director of the Observatory.<br/><br/> Verbiest was the only Westerner in Chinese history to ever receive the honour of a posthumous name by the Emperor. He is buried in Beijing.
Hand-colored image painted on a thin sheet of mica from a manuscript entitled: ‘Seventy-Two Specimens of Caste in India’ (Madura, southern India: 1837). The full manuscript consists of 72 full-color hand-painted images of men and women of the various castes and religious and ethnic groups found in Madura, Tamil Nadu, at that time. The manuscript shows Indian dress and jewelry adornment in the Madura region as they appeared before the onset of Western influences on South Asian dress and style. Each illustrated portrait is captioned in English and in Tamil, and the title page of the work includes English, Tamil, and Telugu.
Abū al-Rayḥān Muḥammad ibn Aḥmad al-Bīrūnī (born 5 September 973 in Kath, Khwarezm, died 13 December 1048 in Ghazn, known as Alberonius in Latin and Al-Biruni in English, was an Iranian-Chorasmian Muslim scholar and polymath of the 11th century CE.<br/><br/> Al-Biruni is regarded as one of the greatest scholars of the medieval Islamic era and was well versed in physics, mathematics, astronomy, and natural sciences, and also distinguished himself as a historian, chronologist and linguist. He was conversant in Chorasmian, Persian, Arabic, Sanskrit and Turkic, and also knew Greek, Hebrew and Syriac. He spent a large part of his life in Ghazni, modern-day Afghanistan, and in 1017 travelled to the Indian subcontinent.<br/><br/> He became the most important interpreter of Indian science to the Islamic world. He is given the titles the 'founder of Indology' and the 'first anthropologist'. He was an impartial writer on custom and creeds of various nations, and was given the title al-Ustdadh ('The Master') for his remarkable description of early 11th-century India. He also made contributions to Earth sciences, and is regarded as the 'father of geodesy' for his important contributions to that field, along with his significant contributions to geography.
Galileo Galilei (15 Feb. 1564—8 Jan. 1642) was an Italian physicist, mathematician, philosopher and astronomer who played a pivotal role in establishing modern science at a time when contradiction of religion was considered heresy. It was as an astronomer that he was most controversial. Galileo developed telescopes that confirmed the phases of Venus, and the discovery of the four largest satellites of Jupiter (named the Galilean moons in his honour), as well as sunspots.<br/><br/> In 1610, while a majority of philosophers and astronomers still subscribed to the geocentric opinion that the Earth was the centre of the universe, Galileo came out in support of Copernicus' heliocentric view that the Sun was at the center of the solar system.<br/><br/> Galileo's opinions were met with outrage and bitter opposition, and he was denounced to the Roman Inquisition. In February 1616, although he had been cleared of any offence, the Catholic Church nevertheless condemned heliocentrism as 'false and contrary to [Christian] Scripture' and forced Galileo to renounce his scientific conclusions.<br/><br/> However, in 1632, Galileo published 'Dialogue Concerning the Two Chief World Systems', in which he again defended heliocentrism. He was tried by the Inquisition, found 'vehemently suspect of heresy', forced to recant, and spent the rest of his life under house arrest.
Omar Khayyám (1048–1131; Persian: ‏عمر خیام) was a Persian polymath: philosopher, mathematician, astronomer and poet. He also wrote treatises on mechanics, geography, mineralogy, music, climatology and theology.<br/><br/> Born in Nishapur, at a young age he moved to Samarkand and obtained his education there, afterwards he moved to Bukhara and became established as one of the major mathematicians and astronomers of the medieval period. He is the author of one of the most important treatises on algebra written before modern times, the Treatise on Demonstration of Problems of Algebra, which includes a geometric method for solving cubic equations by intersecting a hyperbola with a circle. He contributed to a calendar reform.<br/><br/> His significance as a philosopher and teacher, and his few remaining philosophical works, have not received the same attention as his scientific and poetic writings. Zamakhshari referred to him as 'the philosopher of the world'. Many sources have testified that he taught for decades the philosophy of Ibn Sina in Nishapur where Khayyám was born and buried and where his mausoleum today remains a masterpiece of Iranian architecture visited by many people every year.
Galileo Galilei (15 Feb. 1564—8 Jan. 1642) was an Italian physicist, mathematician, philosopher and astronomer who played a pivotal role in establishing modern science at a time when contradiction of religion was considered heresy. It was as an astronomer that he was most controversial. Galileo developed telescopes that confirmed the phases of Venus, and the discovery of the four largest satellites of Jupiter (named the Galilean moons in his honour), as well as sunspots.<br/><br/> In 1610, while a majority of philosophers and astronomers still subscribed to the geocentric opinion that the Earth was the centre of the universe, Galileo came out in support of Copernicus' heliocentric view that the Sun was at the center of the solar system.<br/><br/> Galileo's opinions were met with outrage and bitter opposition, and he was denounced to the Roman Inquisition. In February 1616, although he had been cleared of any offence, the Catholic Church nevertheless condemned heliocentrism as 'false and contrary to [Christian] Scripture' and forced Galileo to renounce his scientific conclusions.<br/><br/> However, in 1632, Galileo published 'Dialogue Concerning the Two Chief World Systems', in which he again defended heliocentrism. He was tried by the Inquisition, found 'vehemently suspect of heresy', forced to recant, and spent the rest of his life under house arrest.
Father Ferdinand Verbiest (9 October 1623 – 28 January 1688) was a Flemish Jesuit missionary in China during the Qing dynasty. He was born in Pittem near Tielt in Flanders, later part of the modern state of Belgium. He was known as Nan Huairen (南懷仁) in Chinese.<br/><br/> He was an accomplished mathematician and astronomer and proved to the court of the Kangxi Emperor that European astronomy was more accurate than Chinese astronomy. He then corrected the Chinese calendar and was later asked to rebuild and re-equip the Beijing Ancient Observatory, being given the role of Head of the Mathematical Board and Director of the Observatory.<br/><br/> He became close friends with the Kangxi Emperor, who frequently requested his teaching, in geometry, philosophy and music. Verbiest worked as a diplomat and cartographer, and also as a translator, because he spoke Latin, German, Dutch, Spanish, Hebrew, and Italian. He wrote more than thirty books.
Abu Mūsā Jābir ibn Hayyān (al-Azdi / al-Kufi / al-Tusi / al-Sufi), often known simply as Geber, (Persian/Arabic: جابر بن حیان) (born c. 721 in Tus, Persia; died c. 815 in Kufa, Iraq) was a prominent polymath: a chemist and alchemist, astronomer and astrologer, engineer, geologist, philosopher, physicist, and pharmacist and physician. Born and educated in Tus, he later traveled to Kufa. Jābir is held to be the first practical alchemist.<br/><br/> As early as the 10th century, the identity and exact corpus of works of Jābir was in dispute in Islamic circles. His name was Latinized as 'Geber' in the Christian West and in 13th century Europe an anonymous writer, usually referred to as Pseudo-Geber, produced alchemical and metallurgical writings under the pen-name Geber.
Ulugh Bek (Uzbek: Muhammad Tarag'ay Ulug'bek, Муҳаммад Тарағай Улуғбек; Persian: میرزا محمد طارق بن شاہرخ الغ‌بیگ - Mīrzā Muhammad Tāraghay bin Shāhrukh Uluġ Bek) (22 March 1394 in Sultaniyeh (Persia) – 27 October, 1449 (Samarkand) was a Timurid ruler as well as an astronomer, mathematician and sultan.<br/><br/> His commonly-known name is not truly a personal name, but can be loosely translated as 'Great Ruler' and was the Turkic equivalent of Timur's Perso-Arabic title Amīr-e Kabīr. His real name was Mīrzā Mohammad Tāraghay bin Shāhrokh. Ulugh Beg was notable for his work in astronomy-related mathematics, such as trigonometry and spherical geometry. He built the great observatory in Samarkand, between 1424 and 1429.
Abū Ma'shar, Ja'far ibn Muḥammad al-Balkhī (also known as al-Falakī or Ibn Balkhī, Latinized as Albumasar, Albusar, or Albuxar) (10 August 787 in Balkh, Khurasan – 9 March 886 in Wāsiṭ, Iraq), was a Persian astrologer, astronomer, and Islamic philosopher, thought to be the greatest astrologer of the Abbasid court in Baghdad.<br/><br/> He was not a major innovator, and his works are practical books for training of astrologers; even as an astrologer he was not intellectually rigorous. Nevertheless, he wrote a number of practical manuals on astrology that profoundly influenced Muslim intellectual history and, through translations, that of western Europe and Byzantium.
Galileo Galilei (15 Feb. 1564—8 Jan. 1642) was an Italian physicist, mathematician, philosopher and astronomer who played a pivotal role in establishing modern science at a time when contradiction of religion was considered heresy. It was as an astronomer that he was most controversial. Galileo developed telescopes that confirmed the phases of Venus, and the discovery of the four largest satellites of Jupiter (named the Galilean moons in his honour), as well as sunspots.<br/><br/> In 1610, while a majority of philosophers and astronomers still subscribed to the geocentric opinion that the Earth was the centre of the universe, Galileo came out in support of Copernicus' heliocentric view that the Sun was at the center of the solar system.<br/><br/> Galileo's opinions were met with outrage and bitter opposition, and he was denounced to the Roman Inquisition. In February 1616, although he had been cleared of any offence, the Catholic Church nevertheless condemned heliocentrism as 'false and contrary to [Christian] Scripture' and forced Galileo to renounce his scientific conclusions.<br/><br/> However, in 1632, Galileo published 'Dialogue Concerning the Two Chief World Systems', in which he again defended heliocentrism. He was tried by the Inquisition, found 'vehemently suspect of heresy', forced to recant, and spent the rest of his life under house arrest.
Xu Guangqi (simplified Chinese: 徐光启; traditional Chinese: 徐光啟; pinyin: Xú Guāngqǐ; April 24, 1562 – November 8, 1633), who later adopted the baptismal name Paul (simplified Chinese: 保禄; traditional Chinese: 保祿), was a Chinese scholar-bureaucrat, agricultural scientist, astronomer, and mathematician in the Ming Dynasty.<br/><br/> Xu was a colleague and collaborator of the Italian Jesuits Matteo Ricci and Sabatino de Ursis and they translated several classic Western texts into Chinese, including part of Euclid's Elements. He was also the author of the Nong Zheng Quan Shu, one of the first comprehensive treatises on the subject of agriculture.<br/><br/> He was one of the 'Three Pillars of Chinese Catholicism'.
Abū ʿAbdallāh Muḥammad ibn Mūsā al-Khwārizmī, earlier transliterated as Algoritmi or Algaurizin, (c. 780 – c. 850) was a Persian mathematician, astronomer and geographer, a scholar in the House of Wisdom in Baghdad.<br/><br/> In the twelfth century, Latin translations of his work on the Indian numerals, introduced the decimal positional number system to the Western world. His Compendious Book on Calculation by Completion and Balancing presented the first systematic solution of linear and quadratic equations in Arabic. In Renaissance Europe, he was considered the original inventor of algebra, although we now know that his work is based on older Indian or Greek sources. He revised Ptolemy's Geography and wrote on astronomy and astrology.<br/><br/> Some words reflect the importance of al-Khwarizmi's contributions to mathematics. 'Algebra' is derived from al-jabr, one of the two operations he used to solve quadratic equations. Algorism and algorithm stem from Algoritmi, the Latin form of his name.
Ulugh Bek (Uzbek: Muhammad Tarag'ay Ulug'bek, Муҳаммад Тарағай Улуғбек; Persian: میرزا محمد طارق بن شاہرخ الغ‌بیگ - Mīrzā Muhammad Tāraghay bin Shāhrukh Uluġ Bek) (22 March 1394 in Sultaniyeh (Persia) – 27 October, 1449 (Samarkand) was a Timurid ruler as well as an astronomer, mathematician and sultan.<br/><br/> His commonly-known name is not truly a personal name, but can be loosely translated as 'Great Ruler' and was the Turkic equivalent of Timur's Perso-Arabic title Amīr-e Kabīr. His real name was Mīrzā Mohammad Tāraghay bin Shāhrokh. Ulugh Beg was notable for his work in astronomy-related mathematics, such as trigonometry and spherical geometry. He built the great observatory in Samarkand, between 1424 and 1429.
Omar Khayyám (1048–1131; Persian: ‏عمر خیام) was a Persian polymath: philosopher, mathematician, astronomer and poet. He also wrote treatises on mechanics, geography, mineralogy, music, climatology and theology.<br/><br/> Born in Nishapur, at a young age he moved to Samarkand and obtained his education there, afterwards he moved to Bukhara and became established as one of the major mathematicians and astronomers of the medieval period. He is the author of one of the most important treatises on algebra written before modern times, the Treatise on Demonstration of Problems of Algebra, which includes a geometric method for solving cubic equations by intersecting a hyperbola with a circle. He contributed to a calendar reform.<br/><br/> His significance as a philosopher and teacher, and his few remaining philosophical works, have not received the same attention as his scientific and poetic writings. Zamakhshari referred to him as 'the philosopher of the world'. Many sources have testified that he taught for decades the philosophy of Ibn Sina in Nishapur where Khayyám was born and buried and where his mausoleum today remains a masterpiece of Iranian architecture visited by many people every year.
Galileo Galilei (15 Feb. 1564—8 Jan. 1642) was an Italian physicist, mathematician, philosopher and astronomer who played a pivotal role in establishing modern science at a time when contradiction of religion was considered heresy. It was as an astronomer that he was most controversial. Galileo developed telescopes that confirmed the phases of Venus, and the discovery of the four largest satellites of Jupiter (named the Galilean moons in his honour), as well as sunspots.<br/><br/> In 1610, while a majority of philosophers and astronomers still subscribed to the geocentric opinion that the Earth was the centre of the universe, Galileo came out in support of Copernicus' heliocentric view that the Sun was at the center of the solar system.<br/><br/> Galileo's opinions were met with outrage and bitter opposition, and he was denounced to the Roman Inquisition. In February 1616, although he had been cleared of any offence, the Catholic Church nevertheless condemned heliocentrism as 'false and contrary to [Christian] Scripture' and forced Galileo to renounce his scientific conclusions.<br/><br/> However, in 1632, Galileo published 'Dialogue Concerning the Two Chief World Systems', in which he again defended heliocentrism. He was tried by the Inquisition, found 'vehemently suspect of heresy', forced to recant, and spent the rest of his life under house arrest.
'Abd al-Rahman al-Sufi (Persian: عبدالرحمن صوفی) (December 7, 903 – May 25, 986) was a Persian astronomer also known as 'Abd ar-Rahman as-Sufi, or 'Abd al-Rahman Abu al-Husayn, 'Abdul Rahman Sufi, 'Abdurrahman Sufi and known in the west as Azophi; the lunar crater Azophi and the minor planet 12621 Alsufi are named after him. Al-Sufi published his famous Book of Fixed Stars in 964, describing much of his work, both in textual descriptions and pictures.
Ulugh Bek (Uzbek: Muhammad Tarag'ay Ulug'bek, Муҳаммад Тарағай Улуғбек; Persian: میرزا محمد طارق بن شاہرخ الغ‌بیگ - Mīrzā Muhammad Tāraghay bin Shāhrukh Uluġ Bek) (22 March 1394 in Sultaniyeh (Persia) – 27 October, 1449 (Samarkand) was a Timurid ruler as well as an astronomer, mathematician and sultan.<br/><br/> His commonly-known name is not truly a personal name, but can be loosely translated as 'Great Ruler' and was the Turkic equivalent of Timur's Perso-Arabic title Amīr-e Kabīr. His real name was Mīrzā Mohammad Tāraghay bin Shāhrokh. Ulugh Beg was notable for his work in astronomy-related mathematics, such as trigonometry and spherical geometry. He built the great observatory in Samarkand, between 1424 and 1429.
Copernican heliocentrism is the name given to the astronomical model developed by Nicolaus Copernicus and published in 1543. It positioned the Sun near the center of the Universe, motionless, with Earth and the other planets rotating around it in circular paths modified by epicycles and at uniform speeds.<br/><br/> The Copernican model departed from the Ptolemaic system that prevailed in Western culture for centuries, placing Earth at the center of the Universe, and is often regarded as the launching point to modern astronomy and the Scientific Revolution.
'Abd al-Rahman al-Sufi (Persian: عبدالرحمن صوفی) (December 7, 903 – May 25, 986) was a Persian astronomer also known as 'Abd ar-Rahman as-Sufi, or 'Abd al-Rahman Abu al-Husayn, 'Abdul Rahman Sufi, 'Abdurrahman Sufi and known in the west as Azophi; the lunar crater Azophi and the minor planet 12621 Alsufi are named after him. Al-Sufi published his famous Book of Fixed Stars in 964, describing much of his work, both in textual descriptions and pictures.
Wu Yong is a fictional character in the Water Margin, one of the Four Great Classical Novels of Chinese literature. He ranks 3rd of the 36 Heavenly Spirits of the 108 Liangshan heroes and is nicknamed the 'Resourceful Star'. He is called Chicasei Goyo in Japan.<br/><br/> Utagawa Kuniyoshi (January 1, 1798 - April 14, 1861) was one of the last great masters of the Japanese ukiyo-e style of woodblock prints and painting. He is associated with the Utagawa school. The range of Kuniyoshi's preferred subjects included many genres: landscapes, beautiful women, Kabuki actors, cats, and mythical animals. He is known for depictions of the battles of samurai and legendary heroes. His artwork was affected by Western influences in landscape painting and caricature.