1 янв 1913 г. - Niels Bohr
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Niels Bohr proposed a theory that electrons move around the nucleus only in orbits a certain distance from the nucleus, with each distance, or level, having a certain amount of energy. When jumping from one orbit level to another with lower energy, a light wave is emitted. This went against the Rutherford model, because Bohr believed that if electrons moved sporadically, radiation would always be emitted from the atom.
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