Differences and relations between classical mechanics and quantum mechanics

Both classical mechanics and relativistic mechanics talk about macroscopic motion, but classical mechanics can only explain the low-speed motion of objects. In classical mechanics, motion is relative, and classical mechanics is represented by Newton. Relativistic mechanics, on the other hand, talks about the motion of an object when it approaches, equals or even exceeds the speed of light (for example, when a satellite moves around the earth, it needs to rely on relativistic mechanics to correct the time). Relativistic mechanics has little to do with relativity, but represented by Einstein, in relativistic mechanics, speed and time are relative.

On the other hand, quantum mechanics is the study of particle motion. Among them, Pauli exclusion principle is classic, and Planck is the representative.

Classical mechanics is the basis of relativistic mechanics, and quantum mechanics often depends on relativistic mechanics.