Niels Bohr

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Bohr's Early Life

Niels Henrik David Bohr was born on October 7, 1885 in Copenhagen, Denmark. His father, Christian Bohr was the Professor of Physiology at Copenhagen University. Growing up as University Professor's sons, Niels and his little brother Herald acquired their curiosity of physics and mathematics at an early age. Niels mother, Ellen Bohr, came from a family with a background in education. Niels attended Gammelholm Grammar School before entering Copenhagen University in 1903. In 1909, he pursued his Master's degree in Physics under the teaching of Professor C. Christiansen, a highly endowed physicist. In 1911, Niels earned his Doctor's degree.

Bohr doctor's disputation was a theorhetical piece of work on the explanation of the properties of metals. He used the electron theory to aid him in his research. It was during this time that he


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Physics

The Bohr Model

Niels Bohr introduced the Bohr model of the atom in 1913. This model depicts the atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus. The Bohr model is basically a quantum physical understanding of the earlier Rutherford model. The Bohr model helped to explain the reason for the structure of the Rydberg formula. It also helped justify the formula's empirical results concerning fundamental physical constants.

Bohr's model of the atom was new unlike planetary models of atoms. Bohr started his research and explanations with Darwin's paper on the role of electrons in the interaction of alpha particles with a nucleus. Using this, Bohr introduced the idea that an electron could drop from a higher-energy orbit to a lower-energy orbit while emitting a quantum of discrete energy. This theory became the underlying theory in the old quantum theory.

Compared to the valence shell atom the Bohr model is mostly a simple and natural model of the hydrogen atom. In theory, the Bohr model can be derived as a first order approximation of the hydrogen atom. The theory uses broad and more accurate quantum mechanics than the hydrogen atom, so it is considered an obsolete scientific theory. This model is commonly used to give students an introduction to quantum mechanics.

Quantam Mechanics

The Manhattan Project

The Nobel Prize

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See also

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