Eudoxus was a famous astronomer and mathematician in ancient Greece. About eudoxus. Eudoxus was born in a poor family in Niedes in 408 BC. But as a child, eudoxus was smart and studious. He entered Plato's College, about two kilometers northwest of Athens, and became a student of Plato. Because of his poor family, he can only live in Piraeus, the port of Athens, because the house there is relatively cheap. He commutes 10 miles between school and home every day, but it doesn't affect him. He still studies hard. After graduating from Plato's College, he went to Egypt to study astronomy. Finally, he became a great astronomer in ancient Greece.

After becoming famous, eudoxus set up his own school in Sisyphus, the northwest coast of Turkey, and began to preach and teach. After a while, eudoxus moved his school to the place where he studied in ancient Greece. At that time, he was already a famous philosopher. He went to visit his teacher Plato and thanked him for his teaching. Plato prepared a grand banquet for him. Since then, eudoxus has been teaching in Greece. Although Oddo Kerry failed to teach many great students like Plato, students like Calypus did not disgrace eudoxus and made great contributions to astronomy. There are few biographical descriptions about eudoxus in history, and we can only find his information from the only historical materials. However, eudoxus's contribution to astronomy and mathematics was enormous, which provided a foundation for the later development of theoretical research. In 355 BC, eudoxus died.

The evaluation of eudoxus is mainly based on his contribution. Eudoxus was a great mathematician and astronomer in ancient Greece. His achievements in mathematics and astronomy are obvious to all. First of all, as a mathematician. Eudoxus's greatest contribution is to put forward eudoxus's thought: Can a straight line be divided into two unequal segments, so that the longer segment is the proportional average of the length of the original segment and the shorter segment? On the basis of studying this problem, eudoxus put forward the concept of "Chinese-foreign ratio" for the first time in the history of mathematics, which is the famous golden section problem. This problem has been applied to various fields for thousands of years and has become an important treasure of geometry.

Eudoxus has also made important achievements in astronomy. Eudoxus, a Greek, proved that a year is not 365 days, but 365 days and 6 hours. Although this is not his discovery, it is also an important study. At the same time, on the basis of accepting his teacher Plato's view that the planet must run in a perfect circular orbit, he tried to change Plato's view through careful observation and pointed out that the planet does not move at a uniform speed in a perfect circular orbit. But for the so-called "face", I didn't do it. In the process of studying astronomy, eudoxus also drew a better new map than Hecataeus, and divided the sky according to longitude and latitude, forming a model of modern astronomical globe. Eudoxus's viewpoint inspired and deduced a new theory for later generations. Hundreds of years later, Cicero in ancient Rome considered himself the greatest astronomer in Greece. Although this view is unfair to another famous astronomer in ancient Greece, Iba Valley, his achievements still have many positive meanings for us today.