Bohr, Niels published works

Rozental, S., ed. Niels Bohr His Life and Work as Seen by His Friends and Colleagues. Amsterdam North-Holland Publishing Co., 1967. 

Pais, Niels Bohr s Times, 207, states that Bohr began the second rare-earth group with element 90 (Th), but Bohr in his 1922 paper, reproduced in L. Rosenfeld (ed.), Niels Bohr Collected Works (Amsterdam, 1972), 4 405, states that no family similar to the rare earths occurs in the known part of the seventh period, a statement consistent with known chemistry and incorporated into his published table (Fig. 8.2). 

By now, it was becoming clear that there was a connection between electrons in bodies, the radiant energy emitted by those bodies, and the distribution of that energy in the spectrum. But a more detailed theory with more information was needed. Rutherford had proposed an atom modeled on the solar system, with electrons orbiting around a positive nucleus and a lot of empty space between the electrons and the nucleus. In 1913 the Danish physicist Niels Bohr (1885-1962), who worked with Rutherford for four years and on his return to Copenhagen made Denmark a world center of theoretical physics, published one of the twentieth century s most important papers. He applied Planck s equation and the notion of quantization of energy to Rutherford s... 

Sommerfeld s work was based on Bohr s model of the hydrogen atom. In this work, he brought relativity theory and the quantum idea together and was able to account for the fine details of the hydrogen spectrum. After Sommerfeld s paper on this work was published in 1916, he received a letter from Niels Bohr. In it Bohr wrote, I do not believe ever to have read anything with more joy than your beautiful work. ... 

Born in Budapest in 1885, he began his first radioisotope studies in plants in 1923. In 1934, he left Berlin for pohtical reasons to go to Copenhagen to work with Niels Bohr. In 1935, Ernest Lawrence sent phosphorus-32 by regular mail from California. Hevesy published more than 400 scientific articles, and won the Nobel prize in 1944. In 1959, he received the Atoms For Peace award by the US Atomic Energy Commission. He died on July 5,1966 in Freiburg, Germany. 

Not long from Nazi Germany, Frisch found his argument against a violently explosive chain reaction reassuring. It was backed by the work of no less a theoretician than Niels Bohr. With satisfaction he published it. 

Meitner passed word of this discovery to her nephew, Otto Frisch, a physicist working at Niels Bohr s institute in Copenhagen. Frisch repeated the experiment, verifying Hahn s observations, and found that tremendous energies were involved. In lanuary 1939, Meitner and Frisch published a short article describing the reaction. In March 1939, Leo Szilard and Walter Zinn at Columbia University discovered that more neutrons are produced than are used in each fission. As we have seen, this result allows a chain reaction to occur. 

Phil. Mag.y 1913, xxvi, 476, 857 jf. Chem. Soc.y 1932, 349. Niels Henrik David Bohr (Copenhagen 7 October 1885-18 November 1962), son of Christian Bohr, professor of physiology in the University of Copenhagen (who published on the solubilities of gases), studied in Copenhagen and Cambridge, and worked with Rutherford in Manchester. He was docent (1913-16) and from 1916 professor of theoretical physics in Copenhagen, Nobel Laureate in 1922. Pauli, Rev. Mod. Phys.y 1945, xvii, 97 (portr.). 

A Figure 6.8 Niels Bohr (right) with Albert Einstein. Bohr (1885-1962) made major contributions to the quantum theory. From 1911 to 1913 he studied in England, working first with j. j. Thomson at Cambridge University and then with Ernest Rutherford at the University of Manchester. Ele published his quantum theory of the atom in 1914 and was awarded the Nobel Prize in physics in 1922. 

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