Niels Henrick David Bohr was born in Copenhagen, Denmark on 1885. In 1911 he received his Ph.D. from Copenhagen University. Later on he moved to England to study under J.J. Thomson in Cambridge and under Ernest Rutherford in Manchester. In 1913 he published his model of the atom, which was based on Rutherford’s planetary model. After his publication of his model he received worldwide fame. Unfortunately, Bohr’s model worked only for hydrogen atoms. Which made the final atomic model yet to be developed. In 1922 he received the Nobel Prize for physics in 1922 for his investigations of the structure of atoms and of the radiation emitting from them. Later on he served as a professor at the University of Copenhagen as well as the director of the
…show more content…
Which had a similarity to the revolution of the rings around Saturn or like the revolution of the planets around the sun. During the time Bohr was working under Ernest Rutherford, he was asked by Rutherford himself to fix some of his problems with his planetary model of the atom. One problem was that according to the physics of the time, Rutherford’s atoms should have an extremely short lifetime. He had thought about the problem and knew of the emission spectrum of hydrogen. Though he added one assumption towards the electrons. Bohr suggested that the electrons could only orbit the nucleus in specific orbits or shells with a fixed radius. The electrons could only be within a radius based on the r(1)= 0.529 multiplied by 10^-10 m and a electron could not exist between the shells. Mathematically the allowed values of the atomic radius could be written as r (n)=n^2 times r(1), where n is a positive integer, and r(1) is the Bohr radius, which is the smallest allowed radius for a hydrogen atom. With the electrons in a circular, quantized orbits around the positively-charged nucleus, Bohr was able to calculate the energy of an electron in the nth energy level of a hydrogen atom. The energy of an electron is always negative while it’s in an
Which had a similarity to the revolution of the rings around Saturn or like the revolution of the planets around the sun. During the time Bohr was working under Ernest Rutherford, he was asked by Rutherford himself to fix some of his problems with his planetary model of the atom. One problem was that according to the physics of the time, Rutherford’s atoms should have an extremely short lifetime. He had thought about the problem and knew of the emission spectrum of hydrogen. Though he added one assumption towards the electrons. Bohr suggested that the electrons could only orbit the nucleus in specific orbits or shells with a fixed radius. The electrons could only be within a radius based on the r(1)= 0.529 multiplied by 10^-10 m and a electron could not exist between the shells. Mathematically the allowed values of the atomic radius could be written as r (n)=n^2 times r(1), where n is a positive integer, and r(1) is the Bohr radius, which is the smallest allowed radius for a hydrogen atom. With the electrons in a circular, quantized orbits around the positively-charged nucleus, Bohr was able to calculate the energy of an electron in the nth energy level of a hydrogen atom. The energy of an electron is always negative while it’s in an