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This sub-section is about paper making; for the writing material first used in ancient Egypt, see papyrus.. Paper: Although it is recorded that the Han dynasty (202 BC – AD 220) court eunuch Cai Lun (50 AD – AD 121) invented the pulp papermaking process and established the use of new materials used in making paper, ancient padding and wrapping paper artifacts dating from the 2nd century BC ...
The ancient Chinese did not differentiate between rational and irrational numbers, and simply calculated irrational numbers to the required degree of precision. [ 24 ] Jia Xian triangle : This triangle was the same as Pascal's Triangle, discovered by Jia Xian in the first half of the 11th century, about six centuries before Pascal .
The four inventions do not necessarily summarize the achievements of science and technology in ancient China. The four inventions were regarded as the most important Chinese achievements in science and technology, simply because they had a prominent position in the exchanges between the East and the West and acted as a powerful dynamic in the ...
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. [8] These claims, however, are highly disputed and rely on much supposition.
Earliest known written formula for gunpowder, from the Wujing Zongyao of 1044 AD.. Gunpowder is the first explosive to have been developed. Popularly listed as one of the "Four Great Inventions" of China, it was invented during the late Tang dynasty (9th century) while the earliest recorded chemical formula for gunpowder dates to the Song dynasty (11th century).
Image credits: Adrian Willings #3 An Ancient Earthquake Detector. Today, seismologists use sensitive equipment to record tectonic movements deep within the earth and analyze this data to predict ...
The invention of the belt drive was a crucial first step in the development of later technologies during the Song dynasty, such as the chain drive and spinning wheel. [50] The inventions of the artisan and mechanical engineer Ding Huan (Chinese: 丁緩) are mentioned in the Miscellaneous Notes on the Western Capital. [51]
The movable type of Bi Sheng was later improved upon by Wang Zhen (1290–1333), who invented wooden movable type c. 1298, and Hua Sui (1439–1513), who invented bronze movable type in China in 1490; yet the Koreans had metal movable type before Hua Sui, and even Wang Zhen had experimented with tin-metal movable type. [39]