61. Bohr, Niels bohr, niels. niels bohr. niels Henrik David bohr (7. oktober 1885 18. niels bohr Instituttet er opkaldt efter ham, og det samme er grundstoffet bohrium. http://www.leksikon.org/print.php?n=4942

62. Bohr_Note niels bohr. Danish Physicist and the leader of the Copenhagen School of the (interpretation of) quanum mechanics, which makes complementarity the key word. http://www.bun.kyoto-u.ac.jp/phisci/Gallery/bohr_note.html

Niels Bohr Danish Physicist and the leader of the Copenhagen School of the (interpretation of) quanum mechanics, which makes "complementarity" the key word. The complementarity is a difficult concept, but it means something like this: the conservation law and the description in terms of space and time are both necessary in physics, but they become incompatible in quantum physics and they become complementary. Thus two features are complementary if both are indispensable but the two are incompatible in one and the same description. Aside from his professional contributions to physics such as atomic models (1913), he played an essential role for the development of quantum physics, as the leader of the Niels Bohr Institute (1921-) of the University of Copenhagen. Such great figures as Pauli and Heisenberg produced their works in a free and lively atmosphere of this Institute; and many first-rate physicists all over the world visited there. As regards the defence of quantum mechanics, he had a long controversy with Einstein. His Institute also played an important role for saving many exile scientists from Germany and other countries. However, Bohr himself was forced to exile himself to the Britain.

63. Niels Bohr - Biografie Rasscass Translate this page niels bohr. niels bohr gilt als Begründer der moderne Atomphysik. Biografie. Nachname bohr, Vorname niels, Geburtsdatum 1885-10-07, Geburtsort Kopenhagen (DK), http://www.rasscass.com/templ/te_bio.php?PID=381&RID=1

64. Bohr, Niels (Henrik David) bohr, niels (Henrik David) (18851962). Danish physicist. His theoretical work produced a new model of atomic structure, now called http://www.cartage.org.lb/en/themes/Biographies/MainBiographies/B/BohrN/1.html

Bohr, Niels (Henrik David) Danish physicist. His theoretical work produced a new model of atomic structure, now called the Bohr model, and helped establish the validity of quantum theory. He also explained the process of nuclear fission. Nobel Prize for Physics 1922. Bohr's first model of the atom was developed working with Ernest Rutherford at Manchester, UK. He was director of the Institute of Theoretical Physics in Copenhagen from 1920. During World War II he took part in work on the atomic bomb in the USA. In 1952 he helped to set up CERN, the European nuclear research organization in Geneva. He proposed the doctrine of complementarity: that a fundamental particle is neither a wave nor a particle, because these are complementary modes of description. Bohr was born and educated in Copenhagen. In 1911 he went to the UK to study at the Cambridge atomic-research laboratory under J J Thomson, but moved 1912 to Manchester to work with New Zealand physicist Rutherford. Bohr developed models of the atom in which electrons are disposed in rings around the nucleus, a first step towards an explanation of atomic structure. In 1913 Bohr developed his theory of atomic structure by applying quantum theory to the observations of radiation emitted by atoms. The authorities in Denmark made him a professor 1916 and then built the Institute of Theoretical Physics for him. Leading physicists from all over the world developed Bohr's work there, resulting in the theories of quantum and wave mechanics that more fully explain the behaviour of electrons within atoms. Bohr's atomic theory was validated 1922 by the discovery of an element he had predicted, which was given the name hafnium.

65. Bohr, Niels Henrik David bohr, niels Henrik David, nEls han rEk dA vE thstrok; bOr Pronunciation Key. Related content from HighBeam Research on niels Henrik David bohr. http://www.infoplease.com/ce5/CE006621.html

HOTWORDS CITE PRINT EMAIL in All Infoplease Almanacs Biographies Dictionary Encyclopedia Home Almanacs Atlas Dictionary ... D-Day Infoplease Tools Periodic Table Conversion Tool Perpetual Calendar Year by Year ... Site Map Also from Infoplease Search Infoplease Info search tips Search Biographies Bio search tips Encyclopedia Bohr, Niels Henrik David [n E E k d A E O r] Pronunciation Key Bohr, Niels Henrik David , Danish physicist, one of the foremost scientists of modern physics. He studied at the Univ. of Copenhagen (Ph.D. 1911) and carried on research on the structure of the atom at Cambridge under Sir James J. Thomson and at Manchester under Lord Ernest Rutherford. In 1916, Bohr became professor of theoretical physics at the Univ. of Copenhagen, and in 1920 he was made director of the Institute of Theoretical Physics, which he was instrumental in founding. Rutherford had discovered the nucleus of the atom in 1911, but classical theory was unable to explain the stability of the nuclear model of the atom. Bohr provided the solution to this problem in 1913, when he postulated that electrons move around the nucleus of the atom in restricted orbits and explained the manner in which the atom absorbs and emits energy. He thus combined the quantum theory with this concept of atomic structure. Much of the knowledge of modern physics was made possible by Bohr's initial revolutionary assumption that atomic processes cannot be explained by classical laws alone. Bohr was a leading figure in the continuing development of the quantum theory over the next twenty years. He received the 1922 Nobel Prize in Physics.

66. MSN Encarta - Bohr, Niels Translate this page Dans ce cas, connectez-vous en cliquant sur le lien Aller sur MSN Encarta Premium (ci-dessus). bohr, niels. Un guide du Web. Plus de résultats pour bohr, niels, http://fr.encarta.msn.com/encyclopedia_761576813/Bohr_Niels.html

Accueil MSN Mon MSN Hotmail Rechercher ... S'abonner   Encarta Premium Rechercher Article accessible sur abonnement MSN Encarta Premium : Acc©dez   30 000 articles encyclop©diques avec plus de 12 000 illustrations, un atlas mondial interactif, un guide du Web et une palette compl¨te de ressources et d'outils ©ducatifs. 34,99 € par an (service d’acc¨s   Internet non compris). En savoir plus. Cet article n'est accessible que si vous ªtes abonn©   MSN Encarta Premium. Dans ce cas, connectez-vous en cliquant sur le lien Aller sur MSN Encarta Premium (ci-dessus). Bohr, Niels Bohr, Niels (1885-1962), physicien danois connu pour sa contribution   la physique nucl©aire et   la compr©hension de la structure de l’atome et   l’... M©dias 2 ©l©ments Encadr©s Sciences Bohr, Physique atomique et connaissance humaine (extrait) Encarta vous int©resse ? Abonnez-vous d¨s maintenant et b©n©ficiez de : Plus de 30 000 articles 2 000 analyses d'oeuvre Plus de 12 000 m©dias (dont des extraits sonores, des vid©os et des m©dias interactifs) Un atlas mondial interactif Une palette compl¨te de ressources et d'outils ©ducatifs Un guide du Web Plus de r©sultats pour Bohr, Niels

67. Bohr, Niels Agnosticism / Atheism niels bohr. Back to Last Page Glossary Index . Related Terms. • Max Planck. Name niels bohr Full Name niels Henrik David bohr. http://atheism.about.com/library/glossary/general/bldef_bohrniels.htm

zJs=10 zJs=11 zJs=12 zJs=13 zc(5,'jsc',zJs,9999999,'') About Agnosticism / Atheism Home Essentials ... Evolution vs. Creationism zau(256,152,145,'gob','http://z.about.com/5/ad/go.htm?gs='+gs,''); Does God Exist? Ethics and Morality Islam and Muslims Religious Right ... Help zau(256,138,125,'el','http://z.about.com/0/ip/417/0.htm','');w(xb+xb); Stay Current Subscribe to the About Agnosticism / Atheism newsletter. Search Agnosticism / Atheism Niels Bohr Back to Last Page Glossary Index Related Terms Max Planck Name: Niels Bohr Full Name: Niels Henrik David Bohr Dates: Born: October 7, 1885 in Copenhagen, Denmark Died: November 18, 1962 in Copenhagen, Denmark Ph.D. from Copenhagen University: 1911 Nobel Prize in Physics: 1922 Open Letter to the United Nations : June 9, 1950 Biography: Niels Bohr grew up in a scientifically-oriented family which encouraged him in his research and intellectual development. Even his earliest work as a student was of such quality that it won awards, and his use of concepts of quantum theory developed by Max Planck led to important developments in theoretical physics and our understanding of atomic structure. After World War II he devoted himself to the development of peaceful applications of atomic energy and in opposition of the use of atomic weapons in war. A hallmark of this debate was his

68. Bohr, Niels Henrik David (Copenaghen 1885-1962), Fisico Danese http://www.quipo.it/atosi/numero2/biografie/bohr.htm

Bohr, Niels Henrik David (Copenaghen 1885-1962), fisico danese. Figlio di un professore di fisiologia, studiò all'Università di Copenaghen, dove si laureò nel 1911. Si recò poi all'Università di Cambridge per studiare fisica nucleare sotto la guida di Joseph John Thomson, ma ben presto si trasferì a Manchester dove iniziò a collaborare con Ernest Rutherford. La teoria della struttura atomica di Bohr, per la quale fu insignito del premio Nobel per la fisica nel 1922, venne formulata in tre memorie pubblicate tra il 1913 e il 1915. I suoi studi erano basati sul modello atomico di Rutherford, secondo il quale l'atomo è costituito da un nucleo compatto circondato da elettroni, molto più leggeri. Il modello proposto da Bohr prevede che gli elettroni siano disposti intorno al nucleo su orbite stabili, corrispondenti a livelli energetici ben definiti, e che l'emissione o l'assorbimento di radiazione elettromagnetica si verifichi a seguito di transizioni elettroniche tra livelli quantici diversi. Inoltre, le proprietà chimiche dell'atomo sono determinate dal numero di elettroni che occupano il livello energetico più esterno. Nel 1916 Bohr tornò all'Università di Copenaghen in qualità di professore di fisica, e nel 1920 divenne direttore dell'Istituto di fisica teorica. Qui si dedicò allo studio dei fondamenti della meccanica quantistica, ponendo alla base del suo lavoro il cosiddetto principio di corrispondenza, secondo cui la teoria dei quanti deve fornire gli stessi risultati della fisica classica per sistemi di dimensioni macroscopiche.

69. Niels Bohr - Wikipedia, The Free Encyclopedia bohr, niels Translate this page bohr, niels. http://www.wikipedia.org/wiki/Niels_Bohr

Niels Bohr From Wikipedia, the free encyclopedia. Niels Henrik David Bohr October 7 November 18 ) was a Danish physicist who made essential contributions to understanding atomic structure and quantum mechanics Niels Bohr Table of contents showTocToggle("show","hide") 1 Biography 1.1 Early years 1.2 Middle years 1.3 Later years, death, and afterwards ... edit Biography edit Early years Born in Copenhagen to Christian Bohr and Ellen Adler , Bohr received his doctorate from Copenhagen University in . He then studied under Ernest Rutherford in Manchester England . Based on Rutherford's theories, Bohr published his model of atomic structure in , introducing the theory of electrons travelling in orbits around the atom's nucleus , the chemical properties of the element being largely determined by the number of electrons in the outer orbits. Bohr also introduced the idea that an electron could drop from a higher-energy orbit to a lower one, emitting a photon (light quantum ) of discrete energy. This became the basis for quantum theory edit Middle years In , Bohr became a professor at the University of Copenhagen, and director of the newly constructed "Institute of Theoretical Physics" in . In , he was awarded the Nobel Prize in physics for developing the Copenhagen interpretation of quantum mechanics Bohr was largely affected by the philosophy of Søren Kierkegaard of sharp sudden "quality" changes and rejection of the continuous changing. These concepts were manifested in Bohr's

70. Niels Bohr niels bohr 1885 - 1962. Hauptseite/Main Page. bohr sches Atommodell. bohr, niels - A-to-Z Science - DiscoverySchool.com. http://www.niester.de/p_natwis/niels_bohr/niels_bohr.html

Niels Bohr Hauptseite/Main Page Deutsch English Niels Bohr Niels Bohr Niels Bohr Niels Bohr ... The Bohr Model of Hydrogen + + + with Animation + + + Erstellt am:

71. Bohr, Niels People 5. Eric Weisstein, Eric Weisstein s World of Scientific Biography bohr, niels (18851962) Articles on the scientist and the Copenhagen interpretation. http://physics.designerz.com/physics-history-people-niels-bohr.php

Map.Designerz.com Science.Designerz.com Physics News Link to Physics ... Mailing List document.write(' '); Physics History People Bohr, Niels ... Physics Site Map Channels Visited Clear Featured Links Web Hosting Science Portals Chemistry Portal Biology Portal ... Sign up for our mailing list Statistics Physics History People Bohr, Niels ... Physics A comprehensive resource on Physics History People Niels Bohr Show Physics (Physics History People Niels Bohr) content on your web site Reach Physics (Physics History People Niels Bohr) Audience Save on Physics History People Niels Bohr books, magazines and software See which Physics History People Niels Bohr domain names are available Search Physics History People Niels Bohr on other search engines Press Releases, Stories and Articles on Physics History People Niels Bohr View all press releases Submit your press release View all articles Submit your article Featured Results (opens in a new window) PBS: A Science Odyssey: People and Discoveries: Niels Bohr Short biographical article. Rate PBS: A Science Odyssey: People and Discoveries: Niels Bohr WebElements: Bohrium Information on history, isolation, and properties.

72. Publications Bohr, Niels Physics. Most comprehensive resource on Physics History People niels bohr Publications. Free Physics content (Physics History People niels bohr Publications). http://physics.designerz.com/physics-history-people-niels-bohr-publications.php

Map.Designerz.com Science.Designerz.com Physics News Link to Physics ... Mailing List document.write(' '); Physics History People Bohr, Niels ... Physics Site Map Channels Visited Clear Featured Links Web Hosting Science Portals Chemistry Portal Biology Portal ... Sign up for our mailing list Statistics Physics History People Bohr, Niels ... Physics A comprehensive resource on Physics History People Niels Bohr Publications Show Physics (Physics History People Niels Bohr Publications) content on your web site Reach Physics (Physics History People Niels Bohr Publications) Audience Save on Physics History People Niels Bohr Publications books, magazines and software See which Physics History People Niels Bohr Publications domain names are available Search Physics History People Niels Bohr Publications on other search engines Press Releases, Stories and Articles on Physics History People Niels Bohr Publications View all press releases Submit your press release View all articles Submit your article Featured Results (opens in a new window) On the Constitution of Atoms and Molecules Paper published in Philosophical Magazine.

73. Bohr, Niels Hendrick David - Physik Lexikon - Bohr, Niels Hendrick David Translate this page bohr, niels Hendrick David. bohr, niels Hendrick David. Diese Seite ist unter der GNU FDL verfügbar Beiträge sind teilweise von Wikipedia. http://www.physik-lexikon.de/viewlexikon2.php?suchwort=Bohr, Niels Hendrick Davi

74. Bohr, Niels Hendrick David - Physik Lexikon - Bohr, Niels Hendrick David Translate this page bohr, niels Hendrick David. bohr, niels Hendrick David (1885-1962), dänischer Physiker und Nobelpreisträger, der ua wichtige und http://www.physik-lexikon.de/viewphysiker2.php?suchwort=Bohr, Niels Hendrick Dav

75. LookSmart - Directory - Niels Henrik David Bohr YOU ARE HERE Home Sciences Physics Physicists Physicists AB bohr, niels. niels Henrik David bohr Delve into the life http://search.looksmart.com/p/browse/us1/us317914/us55566/us330165/us331334/us33

@import url(/css/us/style.css); @import url(/css/us/searchResult1.css); Home IN the directory this category YOU ARE HERE Home Sciences Physics Physicists ... Physicists A-B Niels Henrik David Bohr - Delve into the life of Niels Bohr, a nuclear physicist who developed the Bohr model of the atom. Directory Listings About 7 Stones Mathematical Ideas in Science - Bohr Atomic Model Experiment with an animated model of the hydrogen atom to see how an electron in orbit around the nucleus will behave. American Institute of Physics - Niels Henrik David Bohr View a collection of photographs of the famed Danish scientist, and read an anecdote about his arrival in Princeton, New Jersey. CWIHP - KGB Mission to Niels Bohr Cold War International History Project offers this collection of articles including two publications on Niels Bohr. Jewish Virtual Library - Niels Henrik David Bohr Features a photo and a biography of the Danish-born physicist who won the 1922 Nobel Prize for his pioneering work on radiation. Le Moyne College - Niels Bohr On the Spectrum of Hydrogen In an address given to the Physical Society of Copenhagen, Bohr presents his theories on the structure of atoms. Le Moyne University - Niels Bohr The Structure of the Atom Excerpts from a series of Bohr's papers exploring his theories on the chemical properties of the elements.

76. Biografia De Bohr, Niels Translate this page bohr, niels. (Copenhague, 1885-id., 1962) Físico danés. Hijo de un profesor de fisiología, en el año 1911 se doctoró por la http://www.biografiasyvidas.com/biografia/b/bohr.htm

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77. General Term: Bohr, Niels (1885-1962) bohr, niels (18851962). Danish physicist. He is one of the most influential scientists of the twentieth century. He was the founder http://www.meta-library.net/physgloss/bohr-body.html

Bohr, Niels (1885-1962) Danish physicist. He is one of the most influential scientists of the twentieth century. He was the founder of atomic quantum theory and the Copenhagen interpretation of quantum physics. His theory denied the possibility of a unified, observer-independent field. His own interpretation, the heart of his Copenhagen philosophy, implies that quantum phenomena can only be described by pairs of complimentary perspectives. Though it is impossible to apply either perspective to the phenomena simultaneously, both are required for the exhaustive description of the event. Bohr desired that his methodology be applied to other spheres of knowledge - put simply, he believed that new epistemological insights are obtained by adjoining seemingly incompatible viewpoints. The Copenhagen interpretation was later developed in the work of the German physicist, Werner Heisenberg . Their relationship and the related strands of their thought has been dramatised by the playwright Michael Frayn in his Copenhagen Related Topics: Physics Contributed by: Richard P Whaite Search for Bohr, Niels (1885-1962)

78. Science, Physics, History, People: Bohr, Niels Eric Weisstein s World of Scientific Biography bohr, niels (18851962) - Articles on the scientist and the Copenhagen interpretation. http://www.combose.com/Science/Physics/History/People/Bohr,_Niels/

Top Science Physics History ... Publications Related links of interest: Science:Chemistry:Elements:Bohrium Science:Physics:Nuclear Science:Physics:Particle Science:Physics:Quantum Mechanics ... Cold War International History Project Electronic Bulletin - Includes two articles related to Bohr and Soviet espionage. Creative Quotations - Quotes from Niels Bohr. ESVA: Bohr Mini-Exhibit - Pictures from Emilio Segr¨ Visual Archives. Eric Weisstein's World of Scientific Biography: Bohr, Niels (1885-1962) - Articles on the scientist and the Copenhagen interpretation. Lucidcaf©: Niels Bohr - Brief biography and book references. - Short encyclopedia biographical article. NBI History - Describes his work at the institute for theoretical physics at the Copenhagen university, lated renamed Niels Bohr Institute. Niels Bohr Archive - A repository of primary material for the history of modern physics, pertaining in particular to the early development of quantum mechanics and the life and career of Niels Bohr. News, collections, library, publications and seminars. PBS: A Science Odyssey: People and Discoveries: Niels Bohr - Short biographical article.

79. Science, Physics, History, People, Bohr, Niels: Publications Article from Nature. Discussion with Einstein on Epistemological Problems in Atomic Physics Article from Living Philosophers , by niels bohr. http://www.combose.com/Science/Physics/History/People/Bohr,_Niels/Publications/

Top Science Physics History ... Atomic Structure - Bohr on electronic structure of the periodic table. Article from Nature. Discussion with Einstein on Epistemological Problems in Atomic Physics - Article from"Living Philosophers", by Niels Bohr. Disintegration of Heavy Nuclei - Bohr on the liquid drop model of fission. Published in Nature. On the Constitution of Atoms and Molecules - Paper published in Philosophical Magazine. On the Spectrum of Hydrogen - Address to the Physical Society of Copenhagen, published in Fysisk Tidsskrift. Open Letter to the United Nations - Bohrs attempt to avoidthe nuclear arms race. The Structure of the Atom and the Physical and Chemical Properties of the Elements - Published by Fysisk Tidsskrift 19, 1921. Help build the largest human-edited directory on the web. Submit a Site Open Directory Project Become an Editor The combose.com directory is based on the Open Directory and has been modified and enhanced using our own technology. About ComboSE Download Combose Toolbar

80. Bohr, Niels Henrik David bohr, niels Henrik David. Danish physicist niels bohr, one of the major figures of atomic research. Successfully combining Rutherford http://www.tiscali.co.uk/reference/encyclopaedia/hutchinson/m0000400.html

Your browser does not support inline frames or is currently configured not to display inline frames. // Show bread crumbs navigation path. breadcrumbs('four'); //> ENCYCLOPAEDIA Hutchinson's Encyclopaedia Men's Health ... Wildlife Frames not supported Frames not supported Encyclopaedia Search Click a letter for the index A B C D ... Z Or search the encyclopaedia: Bohr, Niels Henrik David Danish physicist who was awarded the Nobel Prize for Physics in 1922 for his discovery of the structure of atoms and the radiation emanating from them. He pioneered quantum theory by showing that the nuclei of atoms are surrounded by shells of electrons, each assigned particular sets of quantum numbers according to their orbits. He explained the structure and behaviour of the nucleus, as well as the process of nuclear fission . Bohr also proposed the doctrine of complementarity , the theory that a fundamental particle is neither a wave nor a particle, because these are complementary modes of description. Quantum theory and atomic structure Rutherford , who had proposed a nuclear theory of atomic structure from his work on the scattering of alpha rays in 1911. It was not, however, understood how electrons could continually orbit the nucleus without radiating energy, as classical physics demanded. In 1913, Bohr developed his theory of atomic structure by applying quantum theory to the observations of radiation emitted by atoms. Ten years earlier, Max

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