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Yu Xi

Index Yu Xi

Yu Xi (虞喜; 307-345 AD), courtesy name Zhongning (仲寧), was a Chinese official, scholar, and astronomer of the Jin dynasty (265-420 AD). [1]

51 relations: Age of Discovery, Anaxagoras, Ancient Greek astronomy, Aristotle, Axial precession, Book of Jin, Celestial sphere, Chinese astronomy, Chinese classics, Chinese geography, Circumnavigation, Courtesy name, Crossbow, Ecliptic, Emperor Min of Jin, Equinox, Eratosthenes, Flat Earth, Han dynasty, Hipparchus, History of astronomy, History of science and technology in China, Jesuit China missions, Jin dynasty (265–420), Jun (country subdivision), Kuaiji Commandery, Kunyu Wanguo Quantu, Li Ye (mathematician), Luoxia Hong, Magellan–Elcano circumnavigation, March equinox, Matteo Ricci, Observable universe, Official history, Outer space, Philolaus, Precession, Qing dynasty, Shanhai Yudi Quantu, Shaoxing, Society of Jesus, Spherical Earth, Static universe, Taixue, Tang dynasty, Winter solstice, World map, Yu (Chinese surname), Yuan dynasty, Zhang Heng, ..., Zhejiang. Expand index (1 more) »

Age of Discovery

The Age of Discovery, or the Age of Exploration (approximately from the beginning of the 15th century until the end of the 18th century) is an informal and loosely defined term for the period in European history in which extensive overseas exploration emerged as a powerful factor in European culture and was the beginning of globalization.

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Anaxagoras

Anaxagoras (Ἀναξαγόρας, Anaxagoras, "lord of the assembly"; BC) was a Pre-Socratic Greek philosopher.

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Ancient Greek astronomy

Greek astronomy is astronomy written in the Greek language in classical antiquity.

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Aristotle

Aristotle (Ἀριστοτέλης Aristotélēs,; 384–322 BC) was an ancient Greek philosopher and scientist born in the city of Stagira, Chalkidiki, in the north of Classical Greece.

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Axial precession

In astronomy, axial precession is a gravity-induced, slow, and continuous change in the orientation of an astronomical body's rotational axis.

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Book of Jin

The Book of Jin is an official Chinese historical text covering the history of the Jin dynasty from 265 to 420.

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Celestial sphere

In astronomy and navigation, the celestial sphere is an abstract sphere with an arbitrarily large radius concentric to Earth.

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Chinese astronomy

Astronomy in China has a long history, beginning from the Shang Dynasty (Chinese Bronze Age).

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Chinese classics

Chinese classic texts or canonical texts refers to the Chinese texts which originated before the imperial unification by the Qin dynasty in 221 BC, particularly the "Four Books and Five Classics" of the Neo-Confucian tradition, themselves a customary abridgment of the "Thirteen Classics".

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Chinese geography

The study of geography in China begins in the Warring States period (5th century BC).

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Circumnavigation

Circumnavigation is navigation completely around an entire island, continent, or astronomical body (e.g. a planet or moon).

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Courtesy name

A courtesy name (zi), also known as a style name, is a name bestowed upon one at adulthood in addition to one's given name.

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Crossbow

A crossbow is a type of ranged weapon based on the bow and consisting of a horizontal bow-like assembly mounted on a frame which is handheld in a similar fashion to the stock of a gun.

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Ecliptic

The ecliptic is the circular path on the celestial sphere that the Sun follows over the course of a year; it is the basis of the ecliptic coordinate system.

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Emperor Min of Jin

Emperor Min of Jin (300 – February 7, 318), personal name Sima Ye (司馬鄴 or 司馬業), courtesy name Yanqi (彥旗), was an emperor of the Jin Dynasty (265-420) and the last of the Western Jin.

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Equinox

An equinox is commonly regarded as the moment the plane (extended indefinitely in all directions) of Earth's equator passes through the center of the Sun, which occurs twice each year, around 20 March and 22-23 September.

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Eratosthenes

Eratosthenes of Cyrene (Ἐρατοσθένης ὁ Κυρηναῖος,; –) was a Greek mathematician, geographer, poet, astronomer, and music theorist.

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Flat Earth

The flat Earth model is an archaic conception of Earth's shape as a plane or disk.

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Han dynasty

The Han dynasty was the second imperial dynasty of China (206 BC–220 AD), preceded by the Qin dynasty (221–206 BC) and succeeded by the Three Kingdoms period (220–280 AD). Spanning over four centuries, the Han period is considered a golden age in Chinese history. To this day, China's majority ethnic group refers to themselves as the "Han Chinese" and the Chinese script is referred to as "Han characters". It was founded by the rebel leader Liu Bang, known posthumously as Emperor Gaozu of Han, and briefly interrupted by the Xin dynasty (9–23 AD) of the former regent Wang Mang. This interregnum separates the Han dynasty into two periods: the Western Han or Former Han (206 BC–9 AD) and the Eastern Han or Later Han (25–220 AD). The emperor was at the pinnacle of Han society. He presided over the Han government but shared power with both the nobility and appointed ministers who came largely from the scholarly gentry class. The Han Empire was divided into areas directly controlled by the central government using an innovation inherited from the Qin known as commanderies, and a number of semi-autonomous kingdoms. These kingdoms gradually lost all vestiges of their independence, particularly following the Rebellion of the Seven States. From the reign of Emperor Wu (r. 141–87 BC) onward, the Chinese court officially sponsored Confucianism in education and court politics, synthesized with the cosmology of later scholars such as Dong Zhongshu. This policy endured until the fall of the Qing dynasty in 1911 AD. The Han dynasty saw an age of economic prosperity and witnessed a significant growth of the money economy first established during the Zhou dynasty (c. 1050–256 BC). The coinage issued by the central government mint in 119 BC remained the standard coinage of China until the Tang dynasty (618–907 AD). The period saw a number of limited institutional innovations. To finance its military campaigns and the settlement of newly conquered frontier territories, the Han government nationalized the private salt and iron industries in 117 BC, but these government monopolies were repealed during the Eastern Han dynasty. Science and technology during the Han period saw significant advances, including the process of papermaking, the nautical steering ship rudder, the use of negative numbers in mathematics, the raised-relief map, the hydraulic-powered armillary sphere for astronomy, and a seismometer for measuring earthquakes employing an inverted pendulum. The Xiongnu, a nomadic steppe confederation, defeated the Han in 200 BC and forced the Han to submit as a de facto inferior partner, but continued their raids on the Han borders. Emperor Wu launched several military campaigns against them. The ultimate Han victory in these wars eventually forced the Xiongnu to accept vassal status as Han tributaries. These campaigns expanded Han sovereignty into the Tarim Basin of Central Asia, divided the Xiongnu into two separate confederations, and helped establish the vast trade network known as the Silk Road, which reached as far as the Mediterranean world. The territories north of Han's borders were quickly overrun by the nomadic Xianbei confederation. Emperor Wu also launched successful military expeditions in the south, annexing Nanyue in 111 BC and Dian in 109 BC, and in the Korean Peninsula where the Xuantu and Lelang Commanderies were established in 108 BC. After 92 AD, the palace eunuchs increasingly involved themselves in court politics, engaging in violent power struggles between the various consort clans of the empresses and empresses dowager, causing the Han's ultimate downfall. Imperial authority was also seriously challenged by large Daoist religious societies which instigated the Yellow Turban Rebellion and the Five Pecks of Rice Rebellion. Following the death of Emperor Ling (r. 168–189 AD), the palace eunuchs suffered wholesale massacre by military officers, allowing members of the aristocracy and military governors to become warlords and divide the empire. When Cao Pi, King of Wei, usurped the throne from Emperor Xian, the Han dynasty would eventually collapse and ceased to exist.

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Hipparchus

Hipparchus of Nicaea (Ἵππαρχος, Hipparkhos) was a Greek astronomer, geographer, and mathematician.

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History of astronomy

Astronomy is the oldest of the natural sciences, dating back to antiquity, with its origins in the religious, mythological, cosmological, calendrical, and astrological beliefs and practices of prehistory: vestiges of these are still found in astrology, a discipline long interwoven with public and governmental astronomy, and not completely disentangled from it until a few centuries ago in the Western World (see astrology and astronomy).

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History of science and technology in China

Ancient Chinese scientists and engineers made significant scientific innovations, findings and technological advances across various scientific disciplines including the natural sciences, engineering, medicine, military technology, mathematics, geology and astronomy.

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Jesuit China missions

The history of the missions of the Jesuits in China is part of the history of relations between China and the Western world.

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Jin dynasty (265–420)

The Jin dynasty or the Jin Empire (sometimes distinguished as the or) was a Chinese dynasty traditionally dated from 266 to 420.

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Jun (country subdivision)

A jùn was a historical administrative division of China from the Zhou dynasty (c. 7th century BCE) until the early Tang (c. 7th century CE).

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Kuaiji Commandery

Kuaiji Commandery (Chinese: t 郡, s 郡, p Kuàijī Jùn), formerly romanized as K‘uai-chi Commandery, was a former commandery of China in the area of Hangzhou Bay.

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Kunyu Wanguo Quantu

Kunyu Wanguo Quantu (Carta Geografica Completa di tutti i Regni del Mondo, "Complete Geographical Map of all the Kingdoms of the World"), printed in China at the request of the Wanli Emperor during 1602 by the Italian Catholic missionary Matteo Ricci and Chinese collaborators, Mandarin Zhong Wentao and the technical translator, Li Zhizao, is the earliest known Chinese world map with the style of European maps.

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Li Ye (mathematician)

Li Ye (1192–1279), born Li Zhi, courtesy name Li Jingzhai,Beard, Andrea; Marco Sampaolo; Lotha, Gloria.

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Luoxia Hong

Luoxia Hong (ca. 130-70 BCE) was a Chinese astronomer during the Han Dynasty.

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Magellan–Elcano circumnavigation

The Magellan–Elcano circumnavigation was the first voyage around the world in human history.

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March equinox

The March equinox or Northward equinox is the equinox on the Earth when the subsolar point appears to leave the southern hemisphere and cross the celestial equator, heading northward as seen from Earth.

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Matteo Ricci

Matteo Ricci, S.J. (Mattheus Riccius Maceratensis; 6 October 1552 – 11 May 1610), was an Italian Jesuit priest and one of the founding figures of the Jesuit China missions.

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Observable universe

The observable universe is a spherical region of the Universe comprising all matter that can be observed from Earth at the present time, because electromagnetic radiation from these objects has had time to reach Earth since the beginning of the cosmological expansion.

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Official history

An official history is a work of history which is sponsored, authorised or endorsed by its subject.

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Outer space

Outer space, or just space, is the expanse that exists beyond the Earth and between celestial bodies.

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Philolaus

Philolaus (Φιλόλαος, Philólaos) was a Greek Pythagorean and pre-Socratic philosopher.

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Precession

Precession is a change in the orientation of the rotational axis of a rotating body.

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Qing dynasty

The Qing dynasty, also known as the Qing Empire, officially the Great Qing, was the last imperial dynasty of China, established in 1636 and ruling China from 1644 to 1912.

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Shanhai Yudi Quantu

The Shanhai Yudi Quantu ("Complete Terrestrial Map") is a Ming dynasty Chinese map published in 1609 in the leishu encyclopedia Sancai Tuhui.

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Shaoxing

Shaoxing is a prefecture-level city on the southern shore of Hangzhou Bay in eastern Zhejiang province, China.

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Society of Jesus

The Society of Jesus (SJ – from Societas Iesu) is a scholarly religious congregation of the Catholic Church which originated in sixteenth-century Spain.

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Spherical Earth

The earliest reliably documented mention of the spherical Earth concept dates from around the 6th century BC when it appeared in ancient Greek philosophy but remained a matter of speculation until the 3rd century BC, when Hellenistic astronomy established the spherical shape of the Earth as a physical given.

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Static universe

A static universe, also referred to as a "stationary" or "infinite" or "static infinite" universe, is a cosmological model in which the universe is both spatially infinite and temporally infinite, and space is neither expanding nor contracting.

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Taixue

Taixue (Tai-hsueh), or sometimes called the "Imperial Academy", "Imperial School", "Imperial University" or "Imperial Central University", was the highest rank of educational establishment in Ancient China between the Han Dynasty and Sui Dynasty.

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Tang dynasty

The Tang dynasty or the Tang Empire was an imperial dynasty of China preceded by the Sui dynasty and followed by the Five Dynasties and Ten Kingdoms period.

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Winter solstice

The winter solstice (or hibernal solstice), also known as midwinter, is an astronomical phenomenon marking the day with the shortest period of daylight and the longest night of the year.

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World map

A world map is a map of most or all of the surface of the Earth.

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Yu (Chinese surname)

Yu is the pinyin romanisation of several Chinese family names.

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Yuan dynasty

The Yuan dynasty, officially the Great Yuan (Yehe Yuan Ulus), was the empire or ruling dynasty of China established by Kublai Khan, leader of the Mongolian Borjigin clan.

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Zhang Heng

Zhang Heng (AD 78–139), formerly romanized as Chang Heng, was a Han Chinese polymath from Nanyang who lived during the Han dynasty.

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Zhejiang

, formerly romanized as Chekiang, is an eastern coastal province of China.

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References

[1] https://en.wikipedia.org/wiki/Yu_Xi

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