Coriolis stood out for his incredible mathematical skills long before joining École Polytechnique and École des Ponts. At just twelve years old, he provided his teacher with a new demonstration of the hypotenuse square theorem. His name is given to the well-known "Coriolis force", which he discovered while working as an engineer and focusing on the application of the principle of living forces to the relative movement in machines, in particular water wheels. His numerous contributions to science follow a mathematical and theoretical approach to mechanics applied to machines. A member of the Academy of Sciences and Director of Studies at École Polytechnique, he was nicknamed "death-dodger" by his students due to his very poor health.