Geometry.Net - Scientists: Bohr Niels

NBI Today And Previously.
Describes his work at the institute for theoretical physics at the Copenhagen university, lated renamed Category Science Physics History People bohr, nielsNBI History. The niels bohr Institute was founded on March 3, 1921. A few facts. Backto the Index. History of the niels bohr Institute from 1921 to 1965.
http://www.nbi.dk/nbi-history.html

Extractions: The Niels Bohr Institute was founded on March 3, 1921. For more information on the history of the Niels Bohr Institute, contact the Niels Bohr Archive If you are interested to know what the Niels Bohr Institute is today, just have a look at all the other pages in this WWW server, they have been written exactly for this purpose! In any case, here is a short summary. Back to the Index These notes have been written in 1965 in the following occasion.
AIP Center For History Of Physics Niels Bohr Library
Part of the American Institute of Physics Center for History of Physics; specializes in the history of modern physics and allied fields.
http://www.aip.org/history/nblbro.htm

Extractions: D edicated to the history of physics and allied fields, the Niels Bohr Library is part of the Center for History of Physics of the American Institute of Physics (AIP), located in College Park, Maryland. As part of its international, cooperative strategy to preserve and make known the history of modern physics and allied sciences and their relations with society, the Center maintains the Library to provide reference services and save unique materials where other repositories would be less suitable. Here's an article on the history of the library. The Niels Bohr Library's resources consist of books, journals, archives and manuscripts, photographs, interview tapes and transcripts, and other materials documenting the history of nineteenth and twentieth century physics and allied fields (such as astronomy, geophysics, and optics) in America and throughout the world. Online Answers Search the Niels Bohr Library Book Catalog Search the International Catalog of Sources for History of Physics and Allied Sciences
Niels Bohr Institutet - Offentlige Hjemmesider
PopulÃ¦rvidenskabelige sider om instituttets forskning i hÃ¸jenergifysik, kernefysik, biofysik og komplekse systemer.
http://ung.nbi.dk/

Extractions: subatomar fysik . I bio- og kaosfysikken er er et fællestræk den kompleksitet, man finder i stof opbygget af mange atomer. Deraf navnet komplekse systemers fysik Kort om Niels Bohr Institutet Kort om Niels Bohr (engelsk) LINKS: Niels Bohr Institutet Ørsted Laboratoriet Astronomisk Observatorium Geofysisk Afdeling ... Flere links Kommentarer, fejl og mangler
Bohr, Niels (1885-1962) -- From Eric Weisstein's World Of Scientific Biography
Articles on the scientist and the Copenhagen interpretation.Category Science Physics History People bohr, nielsbohr, niels (18851962), Danish physicist who proposed a successful quantum modelof the atom in 1913. Blaedel, N. Harmony and Unity The Life of niels bohr.
http://scienceworld.wolfram.com/biography/BohrNiels.html

Extractions: Danish physicist who proposed a successful quantum model of the atom in 1913. His model assumed that (1) the electron exists at precise distances from the nucleus, (2) as long as an electron remains in one location, no energy is given off, (3) electrons have circular orbits (this is only correct for s orbitals), and (4) the angular momenta associated with allowed electron motion are integral multiples of . Bohr stated the Correspondence Principle, which states that quantum mechanical formulas must reduce to the classical results in the limit of large quantum number. He also advocated a probabilistic interpretation of quantum mechanics known as the Copenhagen interpretation Bohr (Aage) Bohr (Christian) Bohr (Harald)
Niels Bohr
Kort biografi om fysikeren, hans atommodel, det periodiske system og kvanteteorien.
http://www104.thinkquest.dk/historie/his_bohr.htm
Alex Arrizabalaga, Niels Bohr Institutuan
Kopenhageko Unibertsitatean dagoen Fisika institutu garrantzitsuko euskal ikasle bat
http://www.fys.ku.dk/~alex/index2.html
Bohr_Niels
niels Henrik David bohr. Born 7 Oct 1885 niels bohr's father was Christianbohr and his mother was Ellen Adler. Christian bohr was awarded
http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Bohr_Niels.html

Extractions: Niels Bohr 's father was Christian Bohr and his mother was Ellen Adler. Christian Bohr was awarded a doctorate in physiology from the University of Copenhagen in 1880 and in 1881 he became a Privatdozent at the university. Late in the same year he married Ellen, who was the daughter of David Adler, a Jewish politician with a high standing in Danish political and commercial life. Christian and Ellen had three children. The eldest was Jenny born in 1883 in the mansion which David Adler had owned opposite Christiansborg Castle where the Danish Parliament sat. Ellen's mother had continued to live in this house after her husband David Adler died in 1878 and Ellen had gone back to her mother' home to have her child. Two years later Niels was born on his mother's 25th birthday in the same stately home, Ellen again having returned to her mother's house for the birth of her child. The third child of the family, who went on to become a famous mathematician, was Harald Bohr who was two years younger than Niels.
Bohr_Niels
Review the biography of this physicist, born in Denmark in 1885. Includes a photo, a map, drawings and references. niels bohr's father was Christian bohr and his mother was Ellen Adler.
http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Bohr_Niels.html

Extractions: Niels Bohr 's father was Christian Bohr and his mother was Ellen Adler. Christian Bohr was awarded a doctorate in physiology from the University of Copenhagen in 1880 and in 1881 he became a Privatdozent at the university. Late in the same year he married Ellen, who was the daughter of David Adler, a Jewish politician with a high standing in Danish political and commercial life. Christian and Ellen had three children. The eldest was Jenny born in 1883 in the mansion which David Adler had owned opposite Christiansborg Castle where the Danish Parliament sat. Ellen's mother had continued to live in this house after her husband David Adler died in 1878 and Ellen had gone back to her mother' home to have her child. Two years later Niels was born on his mother's 25th birthday in the same stately home, Ellen again having returned to her mother's house for the birth of her child. The third child of the family, who went on to become a famous mathematician, was Harald Bohr who was two years younger than Niels.
Discussions With Einstein On Epistemological Problems In Atomic Physics
Report by niels bohr of his discussions with Albert Einstein over many years on the epistemological implications of quantum theory.
http://www.marxists.org/reference/subject/philosophy/works/dk/bohr.htm

Extractions: on Epistemological Problems in Atomic Physics Source : From Albert Einstein: Philosopher-Scientist (1949), publ. Cambridge University Press, 1949. Neils Bohr's report of conversations with Einstein and Einstein's reply. WHEN invited by the Editor of the series, Living Philosophers With unfailing intuition Einstein thus was led step by step to the conclusion that any radiation process involves the emission or absorption of individual light quanta or "photons" with energy and momentum E hf and P hs respectively, where h is Planck's constant, while f and s are the number of vibrations per unit time and the number of waves per unit length, respectively. Notwithstanding its fertility, the idea of the photon implied a quite unforeseen dilemma, since any simple corpuscular picture of radiation would obviously be irreconcilable with interference effects, which present so essential an aspect of radiative phenomena, and which can be described only in terms of a wave picture. The acuteness of the dilemma is stressed by the fact that the interference effects offer our only means of defining the concepts of frequency and wavelength entering into the very expressions for the energy and momentum of the photon. In this situation, there could be no question of attempting a causal analysis of radiative phenomena, but only, by a combined use of the contrasting pictures, to estimate probabilities for the occurrence of the individual radiation processes. However, it is most important to realize that the recourse to probability laws under such circumstances is essentially different in aim from the familiar application of statistical considerations as practical means of accounting for the properties of mechanical systems of great structural complexity. In fact, in quantum physics we are presented not with intricacies of this kind, but with the inability of the classical frame of concepts to comprise the peculiar feature of indivisibility, or "individuality," characterising the elementary processes.
Niels Bohr Archive
niels bohr Archive. Release The documents have now been organised, transcribedand translated into English at the niels bohr Archive. Because
http://www.nbi.dk/NBA/webpage.html

Extractions: DOCUMENTS RELEASED 6 FEBRUARY 2002 The family of Niels Bohr has decided to release all documents deposited at the Niels Bohr Archive, either written or dictated by Niels Bohr, pertaining specifically to the meeting between Bohr and Heisenberg in September 1941. There are in all eleven documents. The decision has been made in order to avoid possible misunderstandings regarding the contents of the documents. The documents supplement and confirm previously published statements of Bohr's recollections of the meeting, especially those of his son, Aage Bohr. The documents have now been organised, transcribed and translated into English at the Niels Bohr Archive. Because of the overwhelming interest in the material, it has been decided that the material should be published in full instead of being made available to scholars upon individual application, as is normal practice at the Niels Bohr Archive. This has been done by placing facsimiles, transcriptions and translations on this website
Int'l Catalog Of Sources Search
Search records for unpublished source materials in the niels bohr Library archives and over 500 other repositories worldwide.
http://libserv.aip.org/webpac-bin/wgbroker?new -access top.icos
Niels Bohr Institutet - Offentlige Hjemmesider
På niels bohr Institutet udforskes de fundamentale fysiske lovmæssigheder i naturen.
http://www.ung.nbi.dk/

Extractions: subatomar fysik . I bio- og kaosfysikken er er et fællestræk den kompleksitet, man finder i stof opbygget af mange atomer. Deraf navnet komplekse systemers fysik Kort om Niels Bohr Institutet Kort om Niels Bohr (engelsk) LINKS: Niels Bohr Institutet Ørsted Laboratoriet Astronomisk Observatorium Geofysisk Afdeling ... Flere links Kommentarer, fejl og mangler
Physics 1922
(18851962) bohr formulated in 1913 an alternative atomic model, in which only certain circular orbits of the electrons are allowed. In this model light is emitted (or absorbed), when an electron makes a transition from one orbit to another. bohr received the Nobel Prize for Physics in 1922 for his work on the structure of atoms.
http://www.nobel.se/physics/laureates/1922/index.html
Niels Bohr
History top Home Historical Notes bohr, niels Henrik David niels bohr enteredCopenhagen University in 1903, emerging in 1911 with his doctorate.
http://www.sunderland.ac.uk/~hs0bcl/h_nb.htm

Extractions: Died: Copenhagen, November 18, 1962 Einstein: " God does not play dice. Einstein: " God is not malicious. Bohr: " Einstein, stop telling God what to do. One of the most sparkling and prolonged scientific jousting matches took place between Niels Bohr and Albert Einstein in the 20s and 30s. The latter, who could never accept the probabilistic nature of quantum mechanics, produced a series of gedanken experiments (thought experiments) designed to disprove the new theory. Bohr would then attempt to show where Einstein had gone wrong. In one of Bohr's successful attempts at this, he was especially pleased to note that Einstein had forgotten that according to his own theory of general relativity clocks run more slowly under the influence of a gravitational field. In terms of scientific brilliance Niels Bohr is right at the top, perhaps second only to Einstein in the hit parade of 20th century scientists. It seems that every scientist who met Bohr came away with an impression of his deep intellect and his kind, gentle manner. (The phrase "large domed head" seems to occur frequently, too.) Bohr lies at the end of a list of philosopher/scientists which charts the establishment of atomism in the scientific canon over the centuries: from the pre-Socratics Democritus and Leucippus;to Epicurus and Lucretius; to Dalton who was the first to create the concept of atoms in a modern scientific format; to Rutherford and Geiger who demonstrated the nuclear structure of the atom; to Bohr who was able to unite Rutherford's atom with the quantum concept of Planck.
Niels Bohr
Translate this page niels bohr. niels bohr wurde am 7. Oktober 1885 in Kopenhagen geborenund starb auch dort am 18. November 1962. niels bohr stammte
http://www.chemie.uni-bremen.de/stohrer/biograph/bohr.htm

Extractions: Niels Bohr wurde am 7. Oktober 1885 in Kopenhagen geboren und starb auch dort am 18. November 1962. Joseph John Thomson Ernest Rutherford , mit dem ihn bald eine tiefgehende Freundschaft verband. Kasimir Fajans und Frederick Soddy Rutherford Planckschen Wirkungsquantum zu suchen sei. So konnte er unter Verwendung einer dem Planckschen Vorgehen beim Harmonischen Oszillator Johannes Stark (Prinzipien der Atomdynamik II) und eine Bemerkung des Spektroskopikers Hans Marius Hansen , der ihn auf die Einfachheit der von Johann Balmer Rutherford 'On the Constitution of Atoms and Molecules' Edward Pickering in den Spektren ferner Sterne beobachtete und bisher dem Wasserstoff zugeschriebene Spektrallinien dem ionisierten Helium zuzuordnen sind. Die experimentelle Entscheidung dieser Frage durch Evan Jenkin Evans James Franck und Gustav Hertz (die Bohr erstmals richtig deutete) sowie von Henry G.J. Moseley Einen wesentlichen Fortschritt in dieser Richtung brachten Arnold Sommerfelds Hamiltonschen Mechanik Quantenmechanik Korrespondenzprinzips 'On the Quantum Theory of Line Spectra' wider.
Niels Bohr Institute For Astronomy, Physics And Geophysics
niels bohr Institute for Astronomy, Physics and Geophysics. Links to the four consituent laboratories.
http://www.nbi.dk/NBIfAFG/
Niels Bohr
Figures in Radiation History. (niels bohr). niels bohr provided the explanationby incorporating Max Planck's quantum theory into Rutherford's atomic model.
http://www.orcbs.msu.edu/radiation/radhistory/nielsbohr.html
NBIfAFG Forside
niels bohr Institutet for Astronomi, Fysik og Geofysik.
http://ntserv.fys.ku.dk/afg/
Bohr, Niels
bohr, niels. bohr. By 1985). A more technical biography is Abraham Pais,niels bohr's Times In Physics, Philosophy, and Polity (1991).
http://www.britannica.com/nobel/macro/5000_79.html

Extractions: Bohr By courtesy of the Nobelstiftelsen, Stockholm One of the foremost scientists of the 20th century, Niels Henrik David Bohr was the first to apply the quantum theory, which restricts the energy of a system to certain discrete values, to the problem of atomic and molecular structure. He was a guiding spirit and major contributor to the development of quantum mechanics and atomic physics . His work on atomic theory was recognized by the Nobel Prize for Physics in 1922. Bohr was born in Copenhagen on Oct. 7, 1885. His father, Christian Bohr, professor of physiology at the University of Copenhagen, was known for his work on the physical and chemical aspects of respiration. His mother, Ellen Adler Bohr, came from a wealthy Jewish family prominent in Danish banking and parliamentary circles. Bohr's scientific interests and abilities were evident early, and they were encouraged and fostered in a warm, intellectual family atmosphere. Niels's younger brother, Harald, became a brilliant mathematician. Bohr distinguished himself at the University of Copenhagen, winning a gold medal from the Royal Danish Academy of Sciences and Letters for his theoretical analysis of and precise experiments on the vibrations of water jets as a way of determining surface tension. In 1911 he received his doctorate for a thesis on the electron theory of metals that stressed the inadequacies of
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