1. Explanation: He was able to achieve such great achievements because he absorbed the research experience and lessons of many predecessors, and he made new discoveries based on their achievements. It's a self-effacing statement.

2. This is Newton’s famous saying.

Newton was the greatest scientist in the history of physics. He made great contributions to physics throughout his life, but he still said humbly, "The reason why I can see farther than others is because I stand "On the shoulders of giants." In the history of physics, Newton's first law was derived through analysis and reasoning by summarizing previous research results. The giant Newton mentioned was Galileo.

Extended information:

Some of Newton's achievements:

Newton conducted in-depth research based on the work of Galileo and others, and summarized three principles of object motion. Basic laws (Newton's three laws):

1. The first law (i.e., the law of inertia)

When any object is not subject to any external force or is balanced by a force (Fnet=0 ), always maintains uniform linear motion or resting state until an external force acting on it forces it to change this state.

2. The second law (the law of instantaneous action of force)

Force and acceleration are generated, changed, and dissipated at the same time.

F=ma is a vector equation. When applying it, the positive direction should be specified. Any force or acceleration that is the same as the positive direction is taken as a positive value. Otherwise, it is taken as a negative value. Generally, the direction of acceleration is taken as the positive direction. .

According to the principle of independent action of forces, when using Newton's second law to deal with the problem of an object moving in a plane, the forces on the object can be decomposed orthogonally and divided into two mutually perpendicular directions. Apply the component form of Newton's second law: Fx=max, Fy=may series of equations.

3. The third law

The expression F=-F' (F represents the action force, F' represents the reaction force, and the negative sign represents the relationship between the reaction force F' and the action force F (opposite direction)

These three very simple laws of object motion laid a solid foundation for mechanics and had a huge impact on the development of other disciplines. The content of the first law was proposed by Galileo, and later R. Descartes made formal improvements. Galileo also informally mentioned the content of the second law. The content of the third law was derived by Newton after summarizing the results of C. Wren, J. Wallis and C. Huygens.

Baidu Encyclopedia--Newton