SU Zhan.The concept of electron orbits or a revisit to the early development process of quantum mechanics[J].Emerging Science and Technology,2025,4(4):363-372.
SU Zhan.The concept of electron orbits or a revisit to the early development process of quantum mechanics[J].Emerging Science and Technology,2025,4(4):363-372.DOI: 10.12405/j.issn.2097-1486.2025.04.005.
The concept of electron orbits or a revisit to the early development process of quantum mechanics
The atomic model in which electrons move around the atomic nucleus along certain orbits played a crucial role in the early days of quantum mechanics. Among the four quantum numbers used to identify quantum states, three are related to the parameters of the electron orbits. After the emergence of matrix mechanics, the orbit model was abandoned; but the theoretical system based on the orbit picture was still used, which was one of the main reasons for beginners’ difficulty in understanding quantum mechanics.This article reviews the evolution process of the concept of electron orbits along with the development of quantum mechanics, and then takes the electron orbit as an example to discuss the role of fictitious theoretical entities in physical theories.The paper argues that theoretical entities are heuristic physical models that serve as a necessary bridge for human to understand the physical reality. They may not completely correspond to reality, yet they help humans to comprehend physical phenomena that are far removed from everyday sensory experience.
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