The classical electron radius, often denoted by \( r_e \), is a theoretical value that represents a length scale associated with the size of an electron based on classical physics principles. It can be derived from the electron's charge and mass, along with fundamental constants.
Articles by others on the same topic
The classical electron radius is the length scale formed from the elementary charge, vacuum permittivity, electron mass and speed of light. It is not a measured material radius of an Electron. In the classical low-energy scattering model it sets the Thomson cross-section, .