The Bohr–Sommerfeld model (also known as the Sommerfeld model or Bohr–Sommerfeld theory) was an extension of the Bohr model to allow elliptical orbits...

In atomic physics, the Bohr model or Rutherford–Bohr model is an obsolete model of the atom, presented by Niels Bohr and Ernest Rutherford in 1913. It...

premised on the Arnold Sommerfeld enhancements to the Bohr model of the atom. The main tool of the old quantum theory was the Bohr–Sommerfeld quantization condition...

The Sommerfeld model can refer to: Bohr–Sommerfeld model Drude–Sommerfeld model This disambiguation page lists articles associated with the title Sommerfeld...

of these shortcomings were resolved by Arnold Sommerfeld's modification of the Bohr model. Sommerfeld introduced two additional degrees of freedom, allowing...

This gave a mathematical foundation for stationary states of the Bohr-Sommerfeld model of the atom. The second seed was Albert Einstein's quantum derivation...

surface wave Bohr–Sommerfeld model Sommerfeld–Wilson quantization Drude–Sommerfeld model Gamow–Sommerfeld factor Grimm–Sommerfeld rule Orr–Sommerfeld equation...

Prize in Physics in 1922. Bohr was also a philosopher and a promoter of scientific research. Bohr developed the Bohr model of the atom, in which he proposed...

Sommerfeld, who combined the classical Drude model with quantum mechanical Fermi–Dirac statistics and hence it is also known as the Drude–Sommerfeld model...

The shell terminology comes from Arnold Sommerfeld's modification of the 1913 Bohr model. During this period Bohr was working with Walther Kossel, whose...

co-discovery of the Sommerfeld–Wilson quantization rules (1915), a generalization of Bohr's atomic model, introduction of the Sommerfeld fine-structure constant...

interpretation of atomic spectra. Kossel worked with Bohr and Sommerfeld on the Bohr-Sommerfeld model of the atom. In 1916, Kossel put forth his theory of...

anomalous Zeeman effect. In June 1922, Sommerfeld took Heisenberg to Göttingen to attend the Bohr Festival, because Sommerfeld had a sincere interest in his students...

Balmer series Hydrogen line Rydberg–Ritz combination principle Bohr atom Bohr–Sommerfeld model See: Rydberg, J.R. (1889). "Researches sur la constitution...

corrections encountered increasing difficulties; for example, the Bohr–Sommerfeld model could not be extended from hydrogen to the next simplest case, the...

number 107 Bohr–Van Leeuwen theorem Bohr–Kramers–Slater theory Bohr–Einstein debates Sommerfeld–Bohr theory Bohr–Sommerfeld quantization Bohr's complementarity...

5×10−10. The constant was named by Arnold Sommerfeld, who introduced it in 1916 when extending the Bohr model of the atom. α quantified the gap in the...

S2CID 225215678. Kragh, Helge (2012). "The Bohr–Sommerfeld theory". Niels Bohr and the quantum atom: The Bohr model of atomic structure 1913–1925. Oxford University...

(linear) Stark effect in hydrogen is in agreement with both the old Bohr–Sommerfeld model and the quantum-mechanical theory of the atom, higher-order corrections...

deriving the model, which was the only one available at that time. By replacing the statistics with the correct Fermi Dirac statistics, Sommerfeld significantly...

This pre-1925 period marked the old quantum theory built upon the Bohr-Sommerfeld model of the atom with its classical elliptical electron orbits. During...

Zeeman on the Moon is named in his honour. Atom and Atomic Theory Bohr–Sommerfeld model Fresnel drag coefficient Light-dragging effects "Fellows of the...

to multiply in a way that Bohr's model couldn't explain. In 1916, Arnold Sommerfeld added elliptical orbits to the Bohr model to explain the extra emission...

classical physics cannot account for diamagnetism, and Arnold Sommerfeld's extension of the Bohr model to include special-relativistic effects. In the mid-1920s...

formula. As Bohr notes in his subsequent Nobel lecture, the next step was taken by Arnold Sommerfeld in 1915. Sommerfeld's atomic model added a second...

proved to be consistent with the Bohr model for atoms that had been proposed the previous year by Niels Bohr. The Bohr model was a precursor of quantum mechanics...

In addition to the model of the atom, Niels Bohr also proposed a model of the chemical bond. He proposed this model first in the article "Systems containing...

(Sommerfeld), Göttingen (Max Born), and Copenhagen (Niels Bohr). When Lenz retired in 1956 he was succeeded by Harry Lehmann. The Lenz-Ising model can...

secret. In any event, I am convinced that He is not playing dice. Niels Bohr reportedly replied to Einstein's later expression of this sentiment by advising...

de Donder, P. Zeeman, P. Weiss, A. Sommerfeld, M. Curie, P. Langevin, A. Einstein, O. Richardson, B. Cabrera, N. Bohr, W. J. De Haas; 2nd row: E. Herzen...