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22 de abr. de 2024 · Arnold Sommerfeld (born Dec. 5, 1868, Königsberg, Prussia [now Kaliningrad, Russia]—died April 26, 1951, Munich) was a German physicist whose atomic model permitted the explanation of fine-structure spectral lines.
- The Editors of Encyclopaedia Britannica
25 de abr. de 2024 · En 1916, Arnold Sommerfeld, con la ayuda de la relatividad de Albert Einstein, hizo las siguientes modificaciones al modelo de Bohr: MODELO ATÓMICO DE SOMMERFELD1916. Los electrones se mueven alrededor del núcleo, en orbitas circulares o elipticas; A partir del segundo nivel energetico existen dos o mas subniveles en el mismo nivel
2 de may. de 2024 · Bohr model, description of the structure of atoms proposed in 1913 by the Danish physicist Niels Bohr. The Bohr model of the atom, a radical departure from earlier, classical descriptions, was the first that incorporated quantum theory and was the predecessor of wholly quantum-mechanical models.
- The Editors of Encyclopaedia Britannica
1 de may. de 2024 · Atomic theory is the scientific theory that matter is composed of particles called atoms. The definition of the word "atom" has changed over the years in response to scientific discoveries.
In this explainer, we will learn how to describe the concepts of modern atomic theory. Each successive model of the atom was developed to produce a theoretical explanation for a practical result. John Dalton’s hard-sphere model accounted for the way atoms pack together.
Hace 4 días · The Bohr model is a simplified description of the atom. It states—among other things—that electrons in atoms occupy circular orbits around the nucleus, similar to the way planets orbit the sun.
Hace 2 días · 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.
