1, Mathematical Principles of Natural Philosophy is a philosophical work of physics created by British physicist isaac newton, which was first published in 1687. This is one of the most important works in the history of science. The book Mathematical Principles of Natural Philosophy has three parts. The first part introduces the definitions of inertia, momentum and force respectively, and then expounds Newton's law of motion. The second part discusses the motion when there is resistance, which is the beginning of fluid mechanics. The third part, the theorem of calculus, the motion between two objects due to gravity, the gravity of a sphere to a particle, the motion of a three-body and so on. It is applied to natural phenomena, and the problems such as the operation of planets, satellites and comets and the generation of ocean tides are discussed.

2. In the history of science, Mathematical Principles of Natural Philosophy is the first classic work of classical mechanics, and it is also the first complete scientific cosmology and scientific theoretical system mastered by human beings. Its influence covers all fields of classical natural science, and it has repeatedly achieved fruitful results in the following 300 years. From the inside of scientific research, Mathematical Principles of Natural Philosophy shows a model of modern scientific theoretical system, including theoretical system structure, research methods and attitudes, and how to deal with the relationship between man and nature. In addition, the mathematical principles of natural philosophy and the interaction between its authors and contemporary famous figures are also enduring topics in the study of the history of science and other academic history.