Speaking of Zu Chongzhi, many people will think of his accurate calculation of pi. In fact, Pi is only one of Zu Chongzhi's many achievements, he is actually familiar with astronomical calendars, mechanical manufacturing, music, and is also a literary scholar, in many fields have a high attainment, interested readers can follow the interesting history of the small editor to read down.
Zu Chongzhi lived from the end of the Western Jin Dynasty to the Sixteen Kingdoms period, and everyone knows that this was an era of turmoil. In order to escape the war chaos of the Northern Expedition, Zu Chongzhi's ancestors moved to the south to live, and Zu Chongzhi was also born in the south.
Zu Chongzhi's family was a typical family of officials and eunuchs, his grandfather was an official who managed civil engineering, and his father was also knowledgeable, so Zu Chongzhi received a good education from an early age. The young Zu Chongzhi became very interested in science, literature and astronomy. The erudite Zu Chongzhi was highly regarded by the imperial court very early on, and was sent by Emperor Xiaowu of the Southern Dynasty Song Dynasty to work in the organ HualinXue Province, and later to the General Mingguan, which was the top academic research institution of the Southern Dynasty.
Zu Chongzhi has a necessary spirit for scientists, that is, not blindly trusting authority. He will carry out his own precise calculations and deliberations on some of the conclusions of the ancients. One of the best-known pi is one of the results of his calculations. As we all know, the application of pi is very extensive, whether it is an astronomical calendar, or architectural surveying, everything involving circles, basically will use pi. Therefore, how to measure pi as accurately as possible is a problem that ancient mathematicians attach great importance to.
In the Zhou Jie Arithmetic Classic and the Nine Chapters of Arithmetic, Pi is set at three, and In calculating Pi, Liu Hui, who invented the circumcision technique, contributed a lot. So Zu Chongzhi also used Liu Hui's circumcision technique to calculate, the split circle is a 12288-sided shape, and the result obtained this time became the most accurate pi in the following thousand years.
In addition to Pi, Zu Chongzhi also wrote five volumes of "Apothecary", which is not only computationally precise, but also very profound in theory, which is the most difficult mathematical theory book at that time. At the same time, according to Zu Chongzhi's observations, he also proposed a new leap method, according to his calculations, the length of a year is 365.2428141 days, which is only 46 seconds different from today's estimated value. He also began to compile the "Great Ming Calendar". Later, he also devoted a lot of energy to the study of mechanical manufacturing, not only copper machine-driven guide cars, leaky pots (ancient timers) and ingenious tools. There is also a water mill that uses hydraulic power to process grain, a processing tool that is still used in some rural areas in southern China.
Zu Chongzhi, as a second-generation official, has made outstanding achievements in many fields with his own efforts and diligence, and is an example worthy of our learning.
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