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Xie Fei (inventor)
Xiè Fēi (; fl. 334–349) was a scholar of the Later Zhao state during the Sixteen Kingdoms period of Chinese history. He served as Head of the Healing (Medicinal) Department in the State Chancellery. He is known as a mechanical engineer who built a south-pointing chariot (also called a "south-pointing carriage"), a directional compass vehicle which apparently did not use magnetic principles, but was operated by use of differential gears (which apply equal amounts of torque to driving wheels rotating at different speeds), or a similar angular differential principle.J.Needham (1986), ''"Science and Civilization in China"'', Taipei, Caves Books, Ltd, Volume 4, Part 2, pp. 40 and 287, For the great ingenuity shown in the construction of the device, the Later Zhao Emperor Shi Hu granted him the noble title of ''hou Hou or HOU may refer to: * -hou, a place-name element * Hou (surname) * Hou (currency) (Chinese: ), a unit of currency in Greater China * Hou (Odder Municipality), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xie (surname 解)
Xiè (解) is a surname. The character 解 is also pronounced "Jiě." A 2013 study found that it was the 182nd-most common surname, shred by 710,000 people or 0.053% of the population, with Shandong being the province with the most. Notable people * Xie Feng (politician) (Chinese: 解峰; pinyin: Xiè Fēng) (1922-2004), Chinese politician, former Governor of Hebei * Xie Jin (mandarin) (Chinese: 解縉, 1369–1415), courtesy name Dashen (大紳), art name Chunyu (春雨), Chinese scholar-official and poet during the Ming dynasty * Xie Zhenhua (politician), (Chinese: 解振华; born 1949), Chinese politician who served as Vice-Chairman of the National Development and Reform Commission * Xie Jingxian (Chinese: 解静娴; pinyin: Xiè Jìngxián) (born October 31, 1983), Chinese pianist * Xie Zhong (Chinese: 解众; born September 19, 1998), Chinese pair skater * Xie Xuegong (Chinese: 解学恭; Wade–Giles: Hsieh Hsueh-kung; October 6, 1916 – March 3, 1993), Chinese politician, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floruit
''Floruit'' (; abbreviated fl. or occasionally flor.; from Latin for "they flourished") denotes a date or period during which a person was known to have been alive or active. In English, the unabbreviated word may also be used as a noun indicating the time when someone flourished. Etymology and use la, flōruit is the third-person singular perfect active indicative of the Latin verb ', ' "to bloom, flower, or flourish", from the noun ', ', "flower". Broadly, the term is employed in reference to the peak of activity for a person or movement. More specifically, it often is used in genealogy and historical writing when a person's birth or death dates are unknown, but some other evidence exists that indicates when they were alive. For example, if there are wills attested by John Jones in 1204, and 1229, and a record of his marriage in 1197, a record concerning him might be written as "John Jones (fl. 1197–1229)". The term is often used in art history when dating the career ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Later Zhao
The Later Zhao (; 319–351) was a dynasty of the Sixteen Kingdoms in northern China. It was founded by the Shi family of the Jie ethnicity. The Jie were most likely a Yeniseian people and spoke next to Chinese one of the Yeniseian languages.Vovin, Alexander. "Did the Xiongnu speak a Yeniseian language?". Central Asiatic Journal 44/1 (2000), pp. 87–104. The Later Zhao was the second in territorial size to the Former Qin dynasty that once unified northern China under Fu Jiān. When Later Zhao was founded by former Han general Shi Le, the capital was at Xiangguo (襄國, in modern Xingtai, Hebei), but in 335 Shi Hu moved the capital to Yecheng (鄴城, in modern Handan, Hebei), where it would remain for the rest of the state's history (except for Shi Zhi's brief attempt to revive the state at Xiangguo). Rulers of the Later Zhao Rulers family tree See also *Jie (ethnic group) * Wei–Jie war *List of past Chinese ethnic groups * Wu Hu * Buddhism in China *''Memoirs of Emine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sixteen Kingdoms
The Sixteen Kingdoms (), less commonly the Sixteen States, was a chaotic period in Chinese history from AD 304 to 439 when northern China fragmented into a series of short-lived dynastic states. The majority of these states were founded by the "Five Barbarians", non-Han peoples who had settled in northern and western China during the preceding centuries, and had launched a series of rebellions and invasions against the Western Jin dynasty in the early 4th century. However, several of the states were founded by the Han people, and all of the states—whether ruled by Xiongnu, Xianbei, Di, Jie, Qiang, Han, or others—took on Han-style dynastic names. The states frequently fought against both one another and the Eastern Jin dynasty, which succeeded the Western Jin in 317 and ruled southern China. The period ended with the unification of northern China in 439 by the Northern Wei, a dynasty established by the Xianbei Tuoba clan. This occurred 19 years after the Eastern Jin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mechanical Engineering
Mechanical engineering is the study of physical machines that may involve force and movement. It is an engineering branch that combines engineering physics and mathematics principles with materials science, to design, analyze, manufacture, and maintain mechanical systems. It is one of the oldest and broadest of the engineering branches. Mechanical engineering requires an understanding of core areas including mechanics, dynamics, thermodynamics, materials science, structural analysis, and electricity. In addition to these core principles, mechanical engineers use tools such as computer-aided design (CAD), computer-aided manufacturing (CAM), and product lifecycle management to design and analyze manufacturing plants, industrial equipment and machinery, heating and cooling systems, transport systems, aircraft, watercraft, robotics, medical devices, weapons, and others. Mechanical engineering emerged as a field during the Industrial Revolution in Europe in the 18th century; ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South-pointing Chariot
The south-pointing chariot (or carriage) was an ancient Chinese two-wheeled vehicle that carried a movable pointer to indicate the south, no matter how the chariot turned. Usually, the pointer took the form of a doll or figure with an outstretched arm. The chariot was supposedly used as a compass for navigation and may also have had other purposes. The ancient Chinese invented a mobile-like armored cart in the 5th century BC called the Dongwu Che (). It was used for the purpose of protecting warriors on the battlefield. The Chinese war wagon was designed as a kind of mobile protective cart with a shed-like roof. It would serve to be rolled up to city fortifications to provide protection for sappers digging underneath to weaken a wall's foundation. The early Chinese war wagon became the basis of technologies for the making of ancient Chinese south-pointing chariots. There are legends of earlier south-pointing chariots, but the first reliably documented one was created by the Chi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compass
A compass is a device that shows the cardinal directions used for navigation and geographic orientation. It commonly consists of a magnetized needle or other element, such as a compass card or compass rose, which can pivot to align itself with magnetic north. Other methods may be used, including gyroscopes, magnetometers, and GPS receivers. Compasses often show angles in degrees: north corresponds to 0°, and the angles increase clockwise, so east is 90°, south is 180°, and west is 270°. These numbers allow the compass to show azimuths or bearings which are commonly stated in degrees. If local variation between magnetic north and true north is known, then direction of magnetic north also gives direction of true north. Among the Four Great Inventions, the magnetic compass was first invented as a device for divination as early as the Chinese Han Dynasty (since c. 206 BC),Li Shu-hua, p. 176 and later adopted for navigation by the Song Dynasty Chinese during the 11th centur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetic
Magnetism is the class of physical attributes that are mediated by a magnetic field, which refers to the capacity to induce attractive and repulsive phenomena in other entities. Electric currents and the magnetic moments of elementary particles give rise to a magnetic field, which acts on other currents and magnetic moments. Magnetism is one aspect of the combined phenomena of electromagnetism. The most familiar effects occur in ferromagnetic materials, which are strongly attracted by magnetic fields and can be magnetized to become permanent magnets, producing magnetic fields themselves. Demagnetizing a magnet is also possible. Only a few substances are ferromagnetic; the most common ones are iron, cobalt, and nickel and their alloys. The rare-earth metals neodymium and samarium are less common examples. The prefix ' refers to iron because permanent magnetism was first observed in lodestone, a form of natural iron ore called magnetite, Fe3O4. All substances exhibit some type ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Differential (mechanical Device)
A differential is a gear train with three drive shafts that has the property that the rotational speed of one shaft is the average of the speeds of the others, or a fixed multiple of that average. Functional description The following description of a differential applies to a traditional rear-wheel-drive car or truck with an open or limited slip differential combined with a reduction gearset using bevel gears (these are not strictly necessary; see spur-gear differential): Thus, for example, if the car is making a turn to the right, the main ring gear may make 10 full rotations. During that time, the left wheel will make more rotations because it has farther to travel, and the right wheel will make fewer rotations as it has less distance to travel. The sun gears (which drive the axle half-shafts) will rotate at different speeds relative to the ring gear (one faster, one slower) by, say, 2 full turns each (4 full turns relative to each other), resulting in the left wheel mak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torque
In physics and mechanics, torque is the rotational equivalent of linear force. It is also referred to as the moment of force (also abbreviated to moment). It represents the capability of a force to produce change in the rotational motion of the body. The concept originated with the studies by Archimedes of the usage of levers, which is reflected in his famous quote: "''Give me a lever and a place to stand and I will move the Earth''". Just as a linear force is a push or a pull, a torque can be thought of as a twist to an object around a specific axis. Torque is defined as the product of the magnitude of the perpendicular component of the force and the distance of the line of action of a force from the point around which it is being determined. The law of conservation of energy can also be used to understand torque. The symbol for torque is typically \boldsymbol\tau, the lowercase Greek letter ''tau''. When being referred to as moment of force, it is commonly denoted by . In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shi Hu
Shi Hu (; 295–349), courtesy name Jilong (季龍), formally Emperor Wu of (Later) Zhao ((後)趙武帝), was an emperor of the Jie-led Chinese Later Zhao dynasty. He was the founding emperor Shi Le's distant nephew, who took power in a coup after Shi Le's death from Shi Le's heir Shi Hong. Shi Hu was a talented general who rarely lost battles, and Shi Le relied on him heavily in his conquest of northern and central China. However, he was also exceedingly cruel in his military campaigns. After he became the ruler of Later Zhao under the title of "heavenly prince" (''Tian Wang''), he ruled the empire with a heavy hand, imposing heavy tax and labor burdens and spending much of his effort on constructing palaces and collecting concubines. His laws were cruel, and he applied them in a harsh manner, even killing two of his crown princes when they crossed him. While he was alive, his empire remained intact, but as soon as he died, his sons and adopted grandson Ran Min engaged i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hou (title)
Hou ({{zh, c=后, p=Hòu) was a title for an ancient Chinese ruler, equivalent to King/Queen or Emperor/Empress. The Chinese character ''Hou'' (后) is an ideogrammic compounds, in oracle bone script it is written the same as ''Si'' (司, means "to rule") as the combination of mouth (口) and hand (手). Hou usually refers to female rulers in oracle bone script. In Xia Dynasty, the title for Kings of Xia were ''Hou'', for example the expression ''Xia Hou Shi'' (夏后氏) means King of Xia, and the contemporary leader Houyi. Kings of Shang Dynasty The Shang dynasty (), also known as the Yin dynasty (), was a Chinese royal dynasty founded by Tang of Shang (Cheng Tang) that ruled in the Yellow River valley in the second millennium BC, traditionally succeeding the Xia dynasty and ... had their own title ''Wang'', and ''Hou'' turned to refer to the Queen, ''the'' wife of the King. This may reflect the fact that rulers were female in ancient times. Ancient China Pos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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