The Ming Dynasty scientist who translated the book Principles of Geometry was?

The Ming Dynasty scientist who translated the book Principles of Geometry was Xu Guangqi.

I. Introduction to Xu Guangqi:

1, Xu Guangqi (1562- 1633), Zi Xian, No.,Shi, Shanghainese, Wanli Jinshi, official to Chongzhen Dynasty, minister of rites, and college student and cabinet assistant. 1603 became a Catholic, and his Christian name was Paul.

2. Xu Guangqi studied astronomy, calendar, mathematics, surveying and mapping, water conservancy and other western science and technology from Matteo Ricci earlier, and devoted himself to the research of science and technology all his life, diligently writing. He is an active promoter of introducing and absorbing European science and technology, and has made important contributions to the cultural exchange between China and the West in the17th century.

Second, Xu Guangqi's research on mathematics:

1, Xu Guangqi's greatest contribution to mathematics is Matteo Ricci's translation of the Elements of Geometry (the first six volumes). Xu Guangqi put forward the practical idea of "the study of degrees", and also wrote two books, Gouguyi and Measuring Similarities and Differences.

2. Xu Guangqi first used the word "geometry" as a mathematical term. The translation of Geometry Elements has greatly influenced China's original habit of studying and studying mathematics, and changed the direction of China's mathematics development, which is a great event in the history of Chinese mathematics.

Agricultural research and calendar research in Xu Guangqi;

I. Agronomy:

1, Xu Guangqi holds a master's degree in agronomy, and has many works, including The Complete Book of Agricultural Administration, The Sparse of Sweet Potato, Miscellaneous Agricultural Legacy, Agricultural Manuscripts, Taixi Water Law, etc.

2. After the completion of the first draft of "Agricultural Administration Encyclopedia", Xu Guangqi was too busy to attend to the almanac. After his death, his master Chen Zilong and others were responsible for the revision, which was printed in 1639. The book is divided into 12 sequence, ***60 volumes and more than 500,000 words.

3. The 1 2 Order includes three agricultural books, two field books, six agricultural books, nine water conservancy books, four farm tools, six tree arts books, four sericulture books, two sericulture books, four planting books, grazing 1 book, manufacturing1book and famine relief 18.

Second, the calendar:

Xu Guangqi's achievements in astronomical calendar mainly focus on the compilation of "Calendar of Chongzhen" and various sparse plays written for calendar reform. In the almanac, he introduced the concept of the earth circle and the concepts of longitude and latitude. According to Tycho's catalog and China's traditional catalog, he provided the first all-sky catalog, which became the basis of the catalog in Qing Dynasty.