Information about the astronomer Zhang Heng, what the astronomer Zhang Heng invented

Zhang Heng has been fond of astronomy since he was a child and has the spirit of hard work.

When he was a teenager in the Eastern Han Dynasty, he was determined to "read thousands of books and travel thousands of miles". At the age of 17, he left his hometown to study, sought teachers and friends, and inspected the world, and once "entered Beijing to study, watched Taixue, and then passed through the Five Classics and the Six Arts", accumulated a wealth of knowledge, and was able to resist the superstition and hypocrisy of the time, and scientifically explain natural phenomena.

Zhang Heng has been determined to be lofty since he was a child, not to be lazy, but to study hard in difficulties, perseverance, and self-motivation. In the process of growing up, the influence of family education and the performance of his grandfather's conduct played an exemplary role, which had a huge influence on Zhang Heng to become a great scientist later.

Zhang Heng has a noble character and outstanding talent, and is the best candidate to serve as Taishi Ling. And Zhang Heng's life is based on the principle of "not suffering from the disrespect of the position, but suffering from the disrespect of virtue; is not ashamed of being generous, and shame is not wise", indifferent to fame and fortune. Although Tai Shi Ling is only an intermediate** level, and Yu Lu is not very rich, Zhang Heng is very satisfied with the position of being able to apply what he has learned and further develop the field of astronomical research.

Zhang Heng was a great astronomer, mathematician, inventor, geographer, and writer in the Eastern Han Dynasty of China, who invented the geokinetic instrument. The inventor of the armillary sphere is the Luohong of the Western Han Dynasty in China, which was improved by Zhang Heng.

The geodynamic instrument is a masterpiece created by Zhang Heng, a scientist in the Eastern Han Dynasty of China. In the Eastern Han Dynasty in which Zhang Heng lived, ** was more frequent. Zhang Heng has a lot of personal experience in **, in order to grasp the national ** dynamics, he after years of research, and finally in the first year of Yangjia (AD 132) invented the wind geodynamic instrument, which is also the world's first geodynamic instrument.

The geodynamic instrument has eight directions, each of which has a dragon head with a dragon ball in its mouth, and a toad corresponding to it under each dragon's head. If there is a ** occurrence on either side, the dragon ball contained in the dragon's mouth in that direction will fall into the toad's mouth, so that the direction of the occurrence of ** can be measured.

On December 13, 134 A.D., one of the dragon machines of the geodynamic instrument suddenly activated, spit out a copper ball, and fell into the mouth of the toad. At that time, the people in Jingshi (Luoyang) did not feel the slightest sign of **, so some people began to talk about it, blaming the ground for not working. A few days later, someone in Longxi (now Tianshui area of Gansu Province) quickly reported that it had indeed happened there a few days ago, so people began to be extremely convinced of Zhang Heng's superb skills.

Longxi is more than 1,000 miles away from Luoyang, and the geodynamic instrument is correctly marked, indicating that its seismic sensitivity is relatively high.

Zhang Heng (78-139), the word Pingzi. Han nationality, Nanyang Xi'e (now Shiqiao Town, Nanyang City, Henan), one of the five saints of Nanyang, and Sima Xiangru, Yangxiong, Bangu and known as the four masters of Han Fu. During the Eastern Han Dynasty of China, he was a great astronomer, mathematician, inventor, geographer, and writer, and successively served as Langzhong, Taishiling, Shizhong, and Hejian in the Eastern Han Dynasty.

In his later years, he entered the court as Shangshu due to illness, and died in the fourth year of Yonghe (139) at the age of sixty-two. During the Northern Song Dynasty, he was posthumously named Western Obo.

In astronomy, Zhang Heng is the author of "Lingxian" and "Armillary Sphere Annotation", mathematical works such as "Theory of Calculation", and literary works are represented by "Erjing Fu" and "Returning to the Field". "Sui Shu Jing Ji Zhi" has 14 volumes of "Zhang Heng Collection", which has been lost for a long time. Zhang Pu of the Ming Dynasty compiled the "Zhang Hejian Collection", which was included in the "Collection of One Hundred and Three Families of the Six Dynasties of the Han and Wei Dynasties".

Zhang Heng has made outstanding contributions to the development of Chinese astronomy, mechanical technology and science, invented the armillary sphere and the geodynamic instrument, and is one of the representatives of the armillary theory in the middle of the Eastern Han Dynasty. Known as the "Wood Saint" (Ke Sheng) by later generations, because of his outstanding contributions, the United Nations Astronomical Organization named a crater on the far side of the moon "Zhang Heng Crater", and the 1802 asteroid in the solar system was named "Zhang Heng Star". In order to commemorate Zhang Heng, the descendants built the Zhang Heng Museum in Nanyang.

Zhang Heng was an astronomer of the Han Dynasty.