What are the famous inventions of Western technology?

China's ancient science and culture were splendid and rich, and scientific and technological achievements spread all over papermaking, printing, agriculture, medicine, agriculture and other aspects. As we all know, the four major inventions in China are papermaking, compass, gunpowder and clay movable type printing. The four great inventions have played a huge role in promoting China's politics, economy and culture, and at the same time have left a strong page in the history of the development of Western civilization.

Before the invention of paper, China used oracle bones, bronzes, bamboo slips, and cotton silk to keep records, while Westerners used mud bricks, wax plates and other materials to write. These materials are either expensive or bulky, which is not conducive to social life. It was not until 105 A.D. that Cai Lun invented papermaking using tree bark, hemp, and fishing nets as the main raw materials.

The emergence of paper has far-reaching significance for the recording and preservation of history, as well as the dissemination and exchange of culture.

A compass is a direction-indicating instrument invented using the polarity of a magnet. During the Warring States Period, people invented "Sinan" with natural magnets; During the Three Kingdoms period, Ma Jun invented a guide car used to indicate directions; Until the Northern Song Dynasty, the production method of "pointers" was recorded in "Mengxi Pen Talk"; During the Southern Song Dynasty, the compass was widely used for navigation and navigation.

Gunpowder has played an immeasurable role in the development of science and technology in China and even in the world. The invention of gunpowder originated in ancient Chinese alchemy. As early as the Han Dynasty, alchemists had learned the technique of using the gold and stone drugs nitrate and sulfur to make alchemy.

After repeated practice, China invented gunpowder before 808 A.D. at the latest, and then developed into gunpowder weapons, rockets, firearms, etc.

As early as the Tang Dynasty, the world's earliest engraving printing appeared. People first write the text on the paper, then stick it on the wooden board, and then carve the font according to the text, and the engraving is completed. To sum up, China's four great and wonderful inventions have produced an extraordinary impetus to world civilization.

In fact, in addition to the four major inventions, there are many practical and powerful inventions in ancient China that have been handed down to modern times, and even frequently used by people.

<>1. Hybrid rice: In 1973, China's Yuan Longping presented the world-shocking technology of "hybrid rice" to the world. China, with its large population and small per capita arable land, has not only solved its own food problem, but has also made great contributions to the solution of the food problem in Asia and even the world.

2. Chinese character laser phototypesetting: Chinese character laser phototypesetting technology is a major breakthrough in basic theory, which has brought a revolutionary change to the publishing and printing industry and greatly improved the efficiency of the printing and publishing industry. While promoting the spread of Chinese culture, it has also had a profound impact on the printing and publishing industry in Japan, South Korea and other countries.

3. Synthetic bovine insulin: Synthetic bovine insulin is the first time in human history that protein has been synthesized. In the past, the world generally believed that life was natural, and most people thought that synthetic life was impossible, and it was the Chinese who made it possible for the first time.

The synthesis of artificial bovine insulin is a major breakthrough in the field of life sciences, and its impact on human exploration of the mysteries of life is huge.