电子是微观粒子,其运动规律和宏观物体不同。宏观物体的运动往往能给人以直观地感觉,且在力学理论的发展过程中,经典物理学理论十九世纪末已趋成熟,先声夺人。所以人们常常自觉或不自觉地运用经典物理学的方法来认识一切物质质点的运动。但电子的运动规律不服从上述理论,所以人们对电子的运动规律感到非常抽象,难以接受,如对电子云的认识即是一例。 Electrons are microscopic particles, their movement patterns and macroscopic objects are different. The movement of macro objects can often give people an intuitive feeling. And in the development of mechanics theory, the theory of classical physics has become mature at the end of the nineteenth century, and the preconceptions are absent. So people often consciously or unconsciously use the method of classical physics to understand the movement of all material points. However, the law of electron motion does not obey the above theory, so people are very abstract on the law of electron motion, which is unacceptable. For example, the understanding of the electron cloud is an example.