D'Alembert, the head of the Encyclopedia School, is just an illegitimate child of humble origin. Due to his success in academic circles, he was promoted to the position of deputy academician of the Department of Mathematics at the age of 24, and gradually gained a place in the Paris Academy of Sciences.
1768, D'Alembert accepted Laplace, who was also born in poverty. The farmer's son, only 19 years old, showed extraordinary mathematical talent at the first meeting. He not only directed Laplace's mathematical research directly, but also tried to help his disciples arrange their jobs and become a professor of mathematics at the Paris Military Academy. Only five years later, Laplace joined the Academy of Sciences and joined the ranks of first-class mathematicians.
After frederick the great's death, the Paris Academy of Sciences dug up Lagrange for nearly half a century from its eastern rival, the Berlin Academy of Sciences. In the salon of chemist and oxygen nominee lavoisier, both Lagrange and Laplacian are guests.
D'Alembert, Laplace and Lagrange became the three mathematical giants, further consolidating the academic status of the Paris Academy of Sciences. The latter two also reserved precious fire for the whole French academic community after the Great Revolution.
It was not until 1799 that Napoleon, Laplace's student in the Army Academy and a military genius, finally became the new owner of France, and the situation in France finally settled. Subsequently, the Academy of Sciences was rebuilt and reorganized into the French Academy of Sciences, and it has not been cut off until today. The reconstruction of the National Academy of Sciences reunited the only remaining talents, Laplace and Lagrange, who were originally from non-noble backgrounds, helped the revolutionary army to manufacture guns and ammunition during the Great Revolution and successfully avoided the risk of beheading. A group of famous teachers gathered together cultivated the stars who lit up France in the first half of the19th century: Ampal came from this group of students, and his name was used as the unit for measuring current; And Carnot, who later became one of the founders of thermodynamics. There is Fresnel, who led the wave theory to rally against Newton's particle theory in optical research; There is Poisson, who left his own naming theorem in the fields of mathematics and physics.