‪ File: Wheeler, John-Archibald 1963 Kopenhagen. jpg ‬‬| John Wheeler ( 1911-2008 ): revived interest in general relativity in the United States after World War II, worked with Niels Bohr to explain principles of nuclear fission, tried to achieve Einstein ’ s vision of a unified field theory, coined the terms black hole, quantum foam, wormhole, and the phrase “ it from bit ”.

He also met John C. Slater, who had worked with Niels Bohr.

" Majorana also travelled to Copenhagen, where he worked with Niels Bohr, another Nobel Prize winner, and a friend and mentor of Heisenberg.

Niels Bohr was a renowned physicist who worked on the Manhattan Project.

Wheeler also worked with Niels Bohr in explaining the basic principles behind nuclear fission.

Mottelson worked with Aage Bohr to compare the theoretical models with experimental data.

He worked in the Ruđer Bošković Institute in Zagreb ( the capital city of Croatia ), the Niels Bohr Institute in Copenhagen, the University of California, Berkeley, and Ludwig-Maximilians University in Munich.

Bohr worked in mathematical analysis ; much of his early work was devoted to Dirichlet series including his doctorate, which was entitled Bidrag til de Dirichletske Rækkers Theori ( Contributions to the Theory of Dirichlet Series ).

Bohr worked in mathematical analysis, founding the field of almost periodic functions, and worked with the Cambridge mathematician G. H. Hardy.

A full explanation of why these formulas worked, however, had to wait until the presentation of the Bohr model of the atom by Niels Bohr in 1913.

Following a dispute with the faculty over, among other things, the hiring of Harald Bohr as professor at the University ( Heegaard was against it ); Heegaard accepted a professorship at Oslo in Norway, where he worked till his retirement in 1941.

Heisenberg had worked with Bohr in Copenhagen for several years starting in 1924.

* Yoshio Nishina, leading atomic physicist who worked with Bohr, Einstein, Heisenberg and Dirac

From 1958 to 1959 he worked in Copenhagen, Denmark at the Niels Bohr Institute.

From there he moved to Copenhagen in 1963 and worked at the Niels Bohr Institute.

Moseley, after discussions with Bohr who was at the same lab ( and who had used Van den Broek's hypothesis in his Bohr model of the atom ), decided to test Van den Broek and Bohr's hypothesis directly, by seeing if spectral lines emitted from excited atoms fit the Bohr theory's demand that the frequency of the spectral lines be proportional to a measure of the square of Z.

However, the idea that electrons might revolve around a compact nucleus with definite angular momentum was convincingly argued at least 19 years earlier by Niels Bohr, and the Japanese physicist Hantaro Nagaoka published an orbit-based hypothesis for electronic behavior as early as 1904.

With de Broglie's suggestion of the existence of electron matter waves in 1924, and for a short time before the full 1926 Schrödinger equation treatment of hydrogen like atom, a Bohr electron " wavelength " could be seen to be a function of its momentum, and thus a Bohr orbiting electron was seen to orbit in a circle at a multiple of its half-wavelength ( this historically incorrect Bohr model is still occasionally taught to students ).

Bohr was born in Copenhagen in 1922, and grew up surrounded by physicists such as Wolfgang Pauli and Werner Heisenberg, who were working with his father at the Institute for Theoretical Physics ( now the Niels Bohr Institute ) at the University of Copenhagen.

In 1940, shortly after the German occupation of Denmark, Bohr began his physics degree at the University of Copenhagen.

Following graduation, he became an associate at the Niels Bohr Institute.

Bohr became a professor at the University of Copenhagen in 1956, and, following his father's death in 1962, succeeded him as director of the Niels Bohr Institute, a position he held until 1970.

Bohr, visiting Columbia at the time, had independently conceived the same idea, and submitted a paper for publication about a month after Rainwater's which discussed the same problem along more general lines.

Werner Heisenberg had been an assistant to Niels Bohr at his institute in Copenhagen during part of the 1920s, when they helped originate quantum mechanical theory.

On the other hand, Bohr and Heisenberg were not in complete agreement, and they held different views at different times.

Although Bohr, Fowler, Pauli, and other physicists agreed with Chandrasekhar's analysis, at the time, owing to Eddington's status, they were unwilling to publicly support Chandrasekhar .< sup >, pp. 110 – 111 </ sup > Through the rest of his life, Eddington held to his position in his writings, including his work on his fundamental theory.

Dutch physicists Hendrik B. G. Casimir and Dirk Polder at Philips Research Labs proposed the existence of a force between two polarizable atoms and between such an atom and a conducting plate in 1947, and, after a conversation with Niels Bohr who suggested it had something to do with zero-point energy, Casimir alone formulated the theory predicting a force between neutral conducting plates in 1948 ; the former is called the Casimir-Polder force while the latter is the Casimir effect in the narrow sense.

Meitner's and Frisch's interpretation of the work of Hahn and Strassmann crossed the Atlantic Ocean with Niels Bohr, who was to lecture at Princeton University.

Bohr grabbed him by the shoulder and said: “ Young man, let me explain to you about something new and exciting in physics .” It was clear to a number of scientists at Columbia that they should try to detect the energy released in the nuclear fission of uranium from neutron bombardment.

In that period, Niels Bohr was on a lecture engagement at the Princeton University and I remember one afternoon Willis Lamb came back very excited and said that Bohr had leaked out great news.

* Oral History interview transcript with Aage Bohr 23 & 30 January 1963, American Institute of Physics, Niels Bohr Library and Archives

* Oral History interview transcript with Freeman J. Dyson 17 December 1986, American Institute of Physics, Niels Bohr Library and Archives

* Oral History interview transcript with John Bardeen 12, 16 May, 1, 22 December 1977 & 4 April 1978, American Institute of Physics, Niels Bohr Library and Archives

* Oral History interview transcript with John Bardeen 13 February 1980, American Institute of Physics, Niels Bohr Library and Archives

From Center for Models of Life at the Niels Bohr Institute.

By the 1930s, Dirac, Piet Hein and others at the Niels Bohr Institute created toys such as Tangloids to teach and model the calculus of spinors.

* Oral History interview transcript with Walter Brattain January 1964 & 28 May 1974, American Institute of Physics, Niels Bohr Library and Archives

The game was invented by the Danish mathematician Piet Hein, who introduced it in 1942 at the Niels Bohr Institute.

The group of Radek Wojtak of the Niels Bohr Institute at the University of Copenhagen collected data from 8000 galaxy clusters and found that the light coming from the cluster centers tended to be red-shifted compared to the cluster edges, confirming the energy loss due to gravity.

The Niels Bohr Institute

The Niels Bohr Institute

The Niels Bohr Institute is a research institute of the University of Copenhagen.

The Institute was founded in 1921, as the Institute for Theoretical Physics of the University of Copenhagen, by the Danish theoretical physicist Niels Bohr, who had been on the staff of the University of Copenhagen since 1914, and who had been lobbying for its creation since his appointment as professor in 1916.

On the 80th anniversary of Niels Bohr's birth-October 7, 1965-the Institute officially became The Niels Bohr Institute.