Many inventions were born in China, especially the famous ones? Four great inventions? It once influenced the history and development of the whole world. It is said that ancient people had their own views on geography. At that time, people in the East and the West had different understandings of the earth. Some people thought that the flattening of the earth would never end. What else was there in ancient China? Where is the sky round? This proverb means that the sky is round and the earth is square. You can fill in the shape of heaven and earth in the minds of the ancients.
However, with the passage of history, some wise people, with their own imagination and observation, summed up some laws of stars and astronomical phenomena, and then invented a theory called? Huntian said? . Later, many intellectuals in ancient times became obsessed? Huntian said? After studying this theory, Zhang Heng of the Eastern Han Dynasty wrote Zhang Heng's Notes on Hunyi, which recorded:? The sky is like a chicken, the sky is round like a projectile, and the rehmannia is like a chicken, hanging alone in the sky. It is big and small, and there is water on the surface of the sky. The sky is covered with land, and the shell is still yellow. The earth and the sky are independent and float with the water. .
Zhang Heng's theory seems a bit absurd in modern times with developed science, but it was an advanced view at that time. Careful analysis of its contents will make you realize that what it describes is very close to the modern world. It is said that Zhang Heng was inspired by this and developed a model after some efforts? The armillary sphere? , mainly used for observing astronomical stars, consists of an elephant and an armillary sphere. The armillary sphere is responsible for measuring the position coordinates of celestial bodies and planets, and the armillary sphere is responsible for calculating with reference to the data given by the armillary sphere. Zhang Heng said that his armillary sphere was completely based on? Huntian said? The evolution of invention is very practical, not a fool's gizmo.
Zhang Heng's armillary sphere has been recognized by many scholars, and it also represents the top scientific level in ancient China, especially the theory he described and the results calculated by the armillary sphere are close to today's scientific data. Therefore, Zhang Heng and his armillary sphere once became the representative works of ancient science and technology that contemporary China people liked.
But the Eastern Han Dynasty was too far away from modern times. What kind of scientific instrument was the armillary sphere at that time, and what was its real use? All its manufacturing processes and theories were scattered in ancient documents, but archaeological circles never excavated cultural relics similar to the armillary sphere, so the existence of the armillary sphere was gradually suspected. Because there is not enough evidence to show whether Zhang Heng's armillary sphere really exists in history, China is unwilling to mention it.
Although China doesn't pay much attention to the armillary sphere, North Koreans have gained great wealth. In 20 17, they printed the armillary sphere as a background picture in their coins. This seems to blow the musical instrument into the invention of their ancestors, and they are proud of it because they want to pass it on from generation to generation. For Koreans, China people say that this practice has become commonplace. After all, they often say that our China culture and classics are their own, so they registered with international organizations. For example, the rice dumplings we ate on the Dragon Boat Festival were first invented by Koreans, and the soybean milk we drank was competing to talk about Chinese medicine originated in Korea. Even if it is a recognized Chinese medicine in the world, North Koreans can twist it into a North Korean doctor and declare it a world heritage.
It is said that Zhang Heng not only invented the armillary sphere, but also invented the seismograph, which was described in the history textbook of our previous middle school. However, the seismograph has only been described in some historical materials, and there is no strong evidence to support whether it really exists, so its principle and structure are unknown, and it was eventually eliminated from our history textbooks for a long time.