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.
Among the earliest inventions were the abacus, the sundial, and the Kongming lantern. The Four Great Inventions – the compass, gunpowder, papermaking, and printing – were among the most important technological advances, only known to Europe by the end of the Middle Ages 1000 years later. The Tang dynasty (AD 618–906) in particular was a time of great innovation. A good deal of exchange occurred between Western and Chinese discoveries up to the Qing dynasty.
The Jesuit China missions of the 16th and 17th centuries introduced Western science and astronomy, while undergoing its own scientific revolution, at the same time bringing Chinese knowledge of technology back to Europe.Thomas Woods, How the Catholic Church Built Western Civilization (Washington, DC: Regenery, 2005)Agustín Udías, p. 53. In the 19th and 20th centuries the introduction of Western technology was a major factor in the modernization of China. Much of the early Western work in the history of science in China was done by Joseph Needham and his Chinese partner, Lu Gwei-djen.
Ancient China The Warring States period began 2500 years ago at the time of the invention of the crossbow., p. 218. Needham notes that the invention of the crossbow "far outstripped the progress in defensive armor", which made the wearing of armor useless to the princes and dukes of the states., p. 10. At this time, there were also many nascent schools of thought in China—the Hundred Schools of Thought (諸子百家), scattered among many polities. The schools served as communities which advised the rulers of these states. Mo Di (墨翟 Mozi, 470 BCE–c. 391 BCE) introduced concepts useful to one of those rulers, such as defensive fortification. One of these concepts, fa (法 principle or method) p. 185. was extended by the School of Names (名家 Ming jia, ming=name), which began a systematic exploration of logic. The development of a school of logic was cut short by the defeat of Mohism's political sponsors by the Qin dynasty, and the subsumption of fa as law rather than method by the Legalists.
Needham further notes that the Han dynasty, which conquered the short-lived Qin, were made aware of the need for law by Lu Jia and by Shusun Tong, as defined by the scholars, rather than the generals.
Derived from Taoist philosophy, one of the newest longstanding contributions of the ancient Chinese are in Traditional Chinese medicine, including acupuncture and herbal medicine. The practice of acupuncture can be traced back as far as the 1st millennium BC and some scientists believe that there is evidence that practices similar to acupuncture were used in Eurasia during the early Bronze Age.,
Early Taoism cautioned against using technologies that could create chaos or "sully the spirit." A story in the Zhuangzi about a master gardened who refuses to use a well-sweep warns against the use of "clever machines," suggesting that those walking the righteous path should avoid them.
Using shadow clocks and the abacus (both invented in the ancient Near East before spreading to China), the Chinese were able to record observations, documenting the first recorded solar eclipse in 2137 BC, and making the first recording of any planetary grouping in 500 BC.Ancient Chinese Astronomy These claims, however, are highly disputed and rely on much supposition. The Book of Silk was the first definitive atlas of comets, written c. 400 BC. It listed 29 comets (referred to as sweeping stars) that appeared over a period of about 300 years, with renderings of comets describing an event its appearance corresponded to.
In architecture, the pinnacle of Chinese technology manifested itself in the Great Wall of China, under the first Chinese Emperor Qin Shi Huang between 220 and 200 BC. Typical Chinese architecture changed little from the succeeding Han dynasty until the 19th century. The Qin dynasty also developed the crossbow, which later became the mainstream weapon in Europe. Several remains of crossbows have been found among the soldiers of the Terracotta Army in the tomb of Qin Shi Huang.Weapons of the terracotta army
Han dynasty
The Eastern Han dynasty scholar and astronomer Zhang Heng (78–139 AD) invented the first water-powered rotating armillary sphere (the first armillary sphere having been invented by the Greek Eratosthenes), and catalogued 2,500 stars and over 100 constellations. In 132, he invented the first seismological detector, called the "Houfeng Didong Yi" ("Instrument for inquiring into the wind and the shaking of the earth"). According to the History of Later Han Dynasty (25–220 AD), this seismograph was an urn-like instrument, which would drop one of eight balls to indicate when and in which direction an earthquake had occurred. On June 13, 2005, Chinese seismologists announced that they had created a replica of the instrument.
The mechanical engineer Ma Jun (c. 200–265 AD) was another impressive figure from ancient China. Ma Jun improved the design of the silk loom,Needham, Volume 4, Part 2, 39. designed mechanical chain pumps to irrigate palatial gardens, and created a large and intricate mechanical puppet theatre for Emperor Ming of Wei, which was operated by a large hidden waterwheel.Needham, Volume 4, Part 2, 158. However, Ma Jun's most impressive invention was the south-pointing chariot, a complex mechanical device that acted as a mechanical compass vehicle. While the exact mechanism is unclear, scholars think it incorporated the use of a differential gear in order to apply equal amount of torque to wheels rotating at different speeds, a device that is found in all modern automobiles.Needham, Volume 4, Part 2, 40.
Sliding calipers were invented in China almost 2,000 years ago. The Chinese civilization was the earliest civilization to experiment successfully with aviation, with the kite and Kongming lantern (proto Hot air balloon) being the first flying machines.
Four Great Inventions
The "Four Great Inventions" () are the compass, gunpowder, papermaking and printing. Paper and printing were developed first. Printing was recorded in China in the Tang dynasty, although the earliest surviving examples of printed cloth patterns date to before 220.Shelagh Vainker Buddhists were among the earliest adopters of print technology.
Pin-pointing the development of the compass can be difficult: the magnetic attraction of a needle is attested by the Louen-heng, composed between AD 20 and 100,"A lodestone attracts a needle." Li Shu-hua, p. 176. although the first undisputed magnetized needles in Chinese literature appear in 1086.Li Shu-hua, p. 182f.
By AD 300, Ge Hong, an alchemist of the Jin dynasty, recorded the chemical reactions caused when saltpetre, pine resin and charcoal were heated together, in Book of the Master of the Preservations of Solidarity.Liang, pp. Appendix C VII Another report, from c. 850 AD,says that some people "heated together sulfur, realgar and saltpeter with honey; smoke and flames result, so that their hands and faces have been burnt, and even the whole house where they were working burned down."Kelly, p. 4.
These four discoveries had an enormous impact on the development of Chinese civilization and a far-ranging global impact. Gunpowder, for example, spread to the Arabs in the 13th century and thence to Europe.Kelly, p. 22. "Around 1240 the Arabs acquired knowledge of saltpeter ("Chinese snow") from the East, perhaps through India. They knew of gunpowder soon afterward. They also learned about fireworks ("Chinese flowers") and rockets ("Chinese arrows")." According to English philosopher Francis Bacon, writing in Novum Organum:
One of the most important military treatises of all Chinese history was the Huo Long Jing written by Jiao Yu in the 14th century. For gunpowder weapons, it outlined the use of fire arrows and rockets, fire lances and firearms, land mines and naval mines, bombards and cannons, two stage rockets, along with different compositions of gunpowder, including 'magic gunpowder', 'poisonous gunpowder', and 'blinding and burning gunpowder' (refer to his article).
For the 11th century invention of ceramic movable type printing by Bi Sheng (990–1051), it was enhanced by the wooden movable type of Wang Zhen in 1298 and the bronze metal movable type of Hua Sui in 1490.
China's Scientific Revolution
Among the engineering accomplishments of early China were matches, dry docks, the double-action piston pump, cast iron, the iron plough, the horse collar, the multi-tube seed drill, the wheelbarrow, the suspension bridge, the parachute, natural gas as fuel, the raised-relief map, the propeller, the sluice gate, and the pound lock. The Tang dynasty (AD 618–907) and Song dynasty (AD 960–1279) in particular were periods of great innovation.
In the 7th century, book-printing was developed in China, Korea and Japan, using delicate hand-carved wooden blocks to print individual pages. The 9th century Diamond Sutra is the earliest known printed document. Movable type was also used in China for a time, but was abandoned because of the number of characters needed; it would not be until Johannes Gutenberg that the technique was reinvented in a suitable environment.
In addition to gunpowder, the Chinese also developed improved delivery systems for the Byzantine weapon of Greek fire, Meng Huo You and Pen Huo Qi first used in China c. 900.Turnbull, p. 43. Chinese illustrations were more realistic than in Byzantine manuscripts, and detailed accounts from 1044 recommending its use on city walls and ramparts show the brass container as fitted with a horizontal pump, and a nozzle of small diameter. The records of a battle on the Yangtze near Nanjing in 975 offer an insight into the dangers of the weapon, as a change of wind direction blew the fire back onto the Song forces.
Song dynasty
The Song dynasty (960–1279) brought a new stability for China after a century of civil war, and started a new area of modernisation by encouraging examinations and meritocracy. The first Song Emperor created political institutions that allowed a great deal of freedom of discourse and thought, which facilitated the growth of scientific advance, economic reforms, and achievements in arts and literature.Money of the World Special Christmas Edition, Orbis Publishing Ltd, 1998. Trade flourished both within China and overseas, and the encouragement of technology allowed the mints at Kaifeng and Hangzhou to gradually increase in production. In 1080, the mints of Emperor Shenzong had produced 5 billion coins (roughly 50 per Chinese citizen), and the first banknotes were produced in 1023. These coins were so durable that they would still be in use 700 years later, in the 18th century.
There were many famous inventors and early scientists in the Song dynasty period. The statesman Shen Kuo is best known for his book known as the Dream Pool Essays (1088 AD). In it, he wrote of use for a drydock to repair boats, the navigational magnetic compass, and the discovery of the concept of true north (with magnetic declination towards the North Pole). Shen Kuo also devised a geological theory for land formation, or geomorphology, and theorized that there was climate change in geological regions over an enormous span of time.