The great scientist is called Zhang Heng. Zhang Heng is a famous astronomer, geographer and mathematician in the history of China. He is an all-round talent with high attainments in many fields. His life-long works and inventions have made great contributions to the development of China. He was the only scientist known as a saint in ancient China. Not only that, he has great influence in the world.

When Zhang Heng was young, his family background was not very good and his family was poor. But Zhang Heng loves reading very much and often absorbs the knowledge in books. /kloc-When he was 0/6 years old, Zhang Heng left home to study all over the world. Zhang Heng is a talented and capable person. He is calm and won't make friends with some laity. At that time, Zhang Heng was an unusual existence. Instead of indulging in secular life, he likes to study the reasons why everything in the world exists, such as astronomy, geography and mathematics.

Later, because of his outstanding ability, Zhang Heng finally became an official of the Eastern Han Dynasty. During his four years in office 14, he studied many important scientific achievements. For example, it was Zhang Heng who invented the seismograph to detect earthquake orientation in history. Because of the invention of this instrument, the location of the earthquake was accurately determined for the Eastern Han Dynasty, which greatly reduced the losses caused by the earthquake. You know, the seismograph invented by Zhang Heng was earlier than that invented abroad 1700 years ago.

In addition to the seismograph, Zhang Heng also invented the armillary sphere to measure the coordinates of the outer surface of the celestial body. It can be seen that Zhang Heng's thought is not bound by China's feudal thought at all, but is particularly advanced. Zhang Heng's scientific invention transcends the subjective study of things, but studies the vital signs of the objective world. If you only see the road in front of you, Zhang Heng looks up and sees the distant sky.