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When Bohr began his work on a new atomic theory in the summer of 1912 [8]: 237 the atomic model proposed by J J Thomson, now known as the Plum pudding model, was the best available. [ 9 ] : 37 Thomson proposed a model with electrons rotating in coplanar rings within an atomic-sized, positively-charged, spherical volume.
The model's key success lay in explaining the Rydberg formula for the spectral emission lines of atomic hydrogen by using the transitions of electrons between orbits. [24]: 276 While the Rydberg formula had been known experimentally, it did not gain a theoretical underpinning until the Bohr model was introduced. Not only did the Bohr model ...
In three articles published in 1913, he applied old quantum theory to restrict the revolving electrons to stable orbits, creating the Bohr model of the atom. Faced with the opposing particle and wave interpretations of atomic phenomena in the new quantum mechanics , he proposed the complementarity principle of using both interpretations to ...
Bohr developed the Bohr model of the atom, in which he proposed that energy levels of electrons are discrete and that the electrons revolve in stable orbits around the atomic nucleus but can jump from one energy level (or orbit) to another. Although the Bohr model has been supplanted by other models, its underlying principles remain valid.
Niels Bohr publishes his 1913 paper of the Bohr model of the atom. [16] Ștefan Procopiu publishes a theoretical paper with the correct value of the electron's magnetic dipole moment μ B. [17] Niels Bohr obtains theoretically the value of the electron's magnetic dipole moment μ B as a consequence of his atom model
1904 – J. J. Thomson's plum pudding model of the atom 1904; 1905 – Albert Einstein: Special relativity, proposes light quantum (later named photon) to explain the photoelectric effect, Brownian motion, Mass–energy equivalence; 1908 – Hermann Minkowski: Minkowski space; 1911 – Ernest Rutherford: Discovery of the atomic nucleus ...
In 1913, Niels Bohr, a Danish physicist, introduced the concepts of quantum mechanics to atomic structure by proposing what is now known as the Bohr model of the atom, where electrons exist only in strictly defined circular orbits around the nucleus similar to rungs on a ladder. The Bohr Model is a planetary model in which the negatively ...
The article has as much space devoted to Bohr's two years during WWII (1943-45), as it does to Bohr's great period of creativity 1910 to 1930. (I do understand that this last objection (or regret) is not "actionable," but actionable is a relative concept, what is not actionable for someone might be very actionable for someone else.)