The Compton wavelength is defined as the wavelength of a photon whose energy is the same as the rest energy of that particle. The wavelength sets the minimum space required for a free relativistic particle, and it is used as a dividing line between the combinations of mass and size that require quantum mechanics and those that can be described with classical theories.
The Compton wavelength is defined as the wavelength of a photon whose energy is the same as the rest energy of that particle. The wavelength sets the minimum space required for a free relativistic particle, and it is used as a dividing line between the combinations of mass and size that require quantum mechanics and those that can be described with classical theories.
Source: Wikipedia "Compton wavelength" · CC BY-SA 4.0
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