Physics is also made up of mathematics. Physics explains the law of interaction between objects and matter in the universe. These laws are called laws, theorems and formulas. They are all expressed by numbers, but in fact they are all mathematical laws.

Newton lay under the tree and saw the apple fall. He found that the apple didn't fall, but was attracted by the earth. However, even if the secret is discovered, it cannot be used by human beings, and it must be raised to a law theorem through mathematical calculation before it can be used by human beings. This mathematical calculation process is not as simple as addition, subtraction, multiplication and division, but can be calculated in an unprecedented way, such as differential calculus. Therefore, the premise of discovering the law of gravity is to invent the mathematical theorem first. If there is no mathematical theorem, even if Newton finds that apples are attracted to the earth, it is useless. Maybe the old man who looked at the orchard before found it long ago, and it was buried because he couldn't do mathematical calculations. Therefore, the rapid development of western science and technology three or four hundred years ago was actually the development of mathematics first. The invention of science and technology seems to be a matter of physical chemistry, but it actually happened after the invention of mathematical theorems, and it is inseparable from mathematical calculation all the time. Note that every time westerners invent something, a mathematical theorem is born.

In fact, the whole process of invention is like this: the inventor used his wisdom and observation ability to discover a cosmic material law. In order to prove the existence of this law, he must use a formula to describe it, so he must go through a lot of complicated mathematical calculations. But in the process of calculation, he found that the original mathematical model was not easy to use, so he first had to go beyond the original mathematical model and invent a new mathematical calculation model, and then he used the new calculation model to prove the laws of the universe that he began to discover. . . .

So is the invention of the computer. The mathematical binary 0 and 1 were invented first, and then the computer was invented.

It is found that atoms, nuclei and electrons in molecules are also known through mathematical calculations.

Chemistry is also mathematics. It is necessary to calculate what chemical reaction has taken place when two substances combine and what new components have been generated.