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Topic: Harald Bohr


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In the News (Thu 16 Feb 12)

  
  Niels Henrik David Bohr
Bohr was taught mathematics at university by Thorvald Thiele.
Bohr applied to the Carlsberg Foundation for a travel grant in May 1911 and, after the award was made, went to England in September 1911 to study with Sir J J Thomson at Cambridge.
Bohr's other major contributions, in addition to quantum theory, include his theoretical description of the periodic table of elements around 1920, his theory of the atomic nucleus being a compound structure in 1936, and his understanding of uranium fission in terms of the isotope 235 in 1939.
www.jewishvirtuallibrary.org /jsource/biography/Bohr.html   (2671 words)

  
  NationMaster - Encyclopedia: Harald Bohr   (Site not responding. Last check: 2007-10-15)
Harald Bohr (22 April 1887 22 January 1951) was a Danish mathematician, and younger brother of the physicist Niels Bohr.
In mathematics, the Bohr compactification of a topological group G is a compact Hausdorff topological group H that may be canonically associated to G. Its importance lies in the reduction of the theory of uniformly almost periodic functions on G to the theory of continuous functions on H. The concept...
Harald August Bohr (22 April 1887 – 22 January 1951) was a Danish mathematician, and younger brother of the physicist Niels Bohr.
www.nationmaster.com /encyclopedia/Harald-Bohr   (728 words)

  
 Harald Bohr
Harald Bohr (22 April 1887 - 22 January 1951) was a Danish mathematician, and younger brother of the physicist Niels Bohr.
Harald Bohr worked in mathematical analysis, founding the field of almost periodic functions, and worked with the Cambridge mathematician G.
Bohr was also an excellent soccer player; he won an silver medal at the 1908 Summer Olympics with the Danish national football team.
www.xasa.com /wiki/en/wikipedia/h/ha/harald_bohr.html   (117 words)

  
 US Bazaar.com : Encyclopedia Pages : Niels Bohr
Bohr married Margrethe Nørlund in 1912, and one of their sons Aage Niels Bohr grew up to be an important physicist, who like his father received the Nobel prize.
Niels Bohr was born in Copenhagen, Denmark in 1885.
Niels Bohr on the 500 Danish Kroner banknote.
encyclopedia.us-bazaar.com /?title=Niels_Bohr   (2059 words)

  
 Harald Bohrs papirer
Harald Bohr & Johannes Mollerup: Lærebog i Matematisk Analyse.
Til Harald Bohr fra Venner og Elever i Anledning af hans 50 Aars Fødselsdag 22.
Ved forelæggelsen af Harald Bohrs værker i Videnskabernes Selskab 18.
www.math.ku.dk /arkivet/hbohr/hbarkiv.htm   (4233 words)

  
 Bohr_Harald
Harald Bohr was a younger brother of Niels Bohr.
Harald and Niels Bohr's mother, Ellen Adler Bohr, came from a wealthy Jewish family with family members who were important in banking and in politics in Denmark.
Bohr's interest in which functions could be represented by a Dirichlet series led him to devise a theory of almost periodic functions.
members.tripod.com /sfabel/mathematik/database/Bohr_Harald.html   (609 words)

  
 Niels Bohr Biography english version
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.
Bohr was taught mathematics at university by Thorvald Thiele.
Bohr's other major contributions, in addition to quantum theory, include his theoretical description of the periodic table of elements around 1920, his theory of the atomic nucleus being a compound structure in 1936, and his understanding of uranium fission in terms of the isotope 235 in 1939.
www.hilliontchernobyl.com /borh_en.htm   (2602 words)

  
 Niels Bohr Homepage
Bohr knew that the electrons should, theoretically, lose energy and spiral toward the nucleus until they collide with it.
Bohr’s model of the atom proved essentially correct, and he won the Nobel Prize for his quantum theory studies in 1922.
Bohr came up with “complementarity.” This is also called wave-particle duality, which states that certain waves, like light, exhibit characteristics of waves and particles.
www.angelfire.com /scifi/concordiasci/bohr.html   (780 words)

  
 Bohr_Niels
Harald Bohr taking part as soon as they were old enough to contribute.
Bohr applied to the Carlsberg Foundation for a travel grant in May 1911 and, after the award was made, went to England in September 1911 to study with Sir J J Thomson at Cambridge.
Bohr thought that his idea of complementarity could play an important role in fields other than quantum physics and he worked on these ideas throughout the rest of his life.
www.uncg.edu /gar/courses/lixl/380BLS/380Unit5/Lesson5Europe1900_files/Bohr.htm   (2818 words)

  
 Niels Bohr - Danish Physicist Extraordinaire
Bohr's sister was Jenny and his younger brother was Harald (who would win an Olympic silver medal in soccer and become a professor of mathematics).
Bohr received a master's degree in physics in 1909, and a doctor's degree in 1911.
Bohr and Thomson were not well suited to each other, so after a few months, Bohr changed to Victoria University in Manchester (University of Manchester) working with Ernest Rutherford.
www.suite101.com /article.cfm/biographies_scientists/104948   (433 words)

  
 Bohr, Niels
Niels Bohr studied at the University of Copenhagen and earned a master of science degree in 1909 and a doctorate degree in 1911 (at the age of twenty-six).
With this theory Bohr combined the atomic model of Rutherford with existing quantum theory, and he made it clear that classical physics was not sufficient to describe atoms or their behaviors.
Niels Bohr was one of the greatest scientists of the twentieth century.
www.chemistryexplained.com /Ar-Bo/Bohr-Niels.html   (591 words)

  
 The Bohr Atom
Bohr concluded that in an atom in its natural rest state, the electron must be in a special orbit, he called it a "stationary state" to which the usual rules of electromagnetic radiation didn't apply.
Bohr suggested in a note to Rutherford in the summer of 1912 that requiring this energy be some constant (assumed to be of order of magnitude one) multiplied by hf would fix the size of the atom.
Therefore, Bohr concluded K is fixed by requiring that the frequency of radiation emitted by a really large atom be correctly given by ordinary common sense -- that is, the frequency of the radiation must be the same as the orbital frequency of the electron, the number of cycles a second.
galileo.phys.virginia.edu /classes/252/Bohr_Atom/Bohr_Atom.html   (2892 words)

  
 Copenhagen . Margrethe Bohr | PBS
She was studying French for a private teacher's certificate, when in 1910 she met the brothers Niels and Harald Bohr, friends of her own brothers.
Bohr continued on to England, and then with his son Aage later traveled to America.
After Niels Bohr's death, a friend of the family spoke about Margrethe and Niels' marriage: "It was not luck, rather deep insight, which led him to find in young years his wife, who, as we all know, had such a decisive role in making his whole scientific and personal activity possible and harmonious."
www.pbs.org /hollywoodpresents/copenhagen/story/mbohr.html   (452 words)

  
 Harald Bohr Summary
Harald August Bohr (22 April 1887 22 January 1951) was a Danish mathematician, and younger brother of the physicist Niels Bohr.
Bohr was also an excellent football player; he won a silver medal at the 1908 Summer Olympics with the Danish national football team.
Harald Bohr was known as an extremely capable academic teacher and the annual award for outstanding teaching at the University of Copenhagen is called the Harald, in recollection of Harald Bohr.
www.bookrags.com /Harald_Bohr   (231 words)

  
 Niels Bohr Birthday
Niels Henrik David Bohr was born in Copenhagen, Denmark on October 7, 1885 to Christian Bohr, a professor of physiology at Copenhagen University, and Ellen Bohr, also known as Adler.
Bohr was among the first to see the importance of atomic number, which indicates the position of an element on the periodic table and is equal to the number of protons in the nuclei of atoms.
Bohr also recognized that the various physical and chemical properties of the elements depend upon the electrons moving around the nuclei of atoms.
web.visionlearning.com /events/Bohr_Oct7_2004.htm   (786 words)

  
 Untitled Document
Bohr did most of his original work as a young man. By the time he reached middle age he was doing some original work, but his best work was done in collaboration with young physicists who came and worked with him in Copenhagen.
Bohr postulated that radiation is emitted from atoms not as a result of the periodic motion of the electron in its orbit, but only when an electron "jumps" from one orbit to another losing energy that is emitted as radiation.
Bohr's theory of the compound nucleus, in which the repulsion between positively charged protons is countered by huge amounts of energy in order to hold the nucleus together, helped lead to the hypothesis that splitting an atom would produce enough energy to fabricate a powerful weapon.
www.webpages.uidaho.edu /~sflores/PBScopenhagenguide.html   (3588 words)

  
 Nordic Culture > Nils Bohr, Danish physicist - Scandinavica.com
Niels Henrik David Bohr was born in Copenhagen in 1885, in a family of talented academics.
His father Christian Bohr was a professor of Physiology at University of Copenhagen University, and Niels' younger brother, Harald, became a professor in Mathematics.
In 1916 Bohr became a professor of physics at the University of Copenhagen, and in 1920 he was made director of the Institute of Theoretical Physics, which was created specially for his research.
www.scandinavica.com /culture/famous/bohr.htm   (931 words)

  
 Niels Bohr at AllExperts
Niels (Henrik David) Bohr (October 7, 1885 – November 18, 1962) was a Danish physicist who made essential contributions to understanding atomic structure and quantum mechanics.
His father, Christian Bohr, was professor of physiology at the University of Copenhagen, while his mother, Ellen Adler Bohr, came from a wealthy Sephardic Jewish family prominent in Danish banking and parliamentary circles.
His brother was Harald Bohr, a mathematician and Olympic soccer player who played in the Danish national team; Niels Bohr was a passionate soccer player as well, and the two brothers played a number of matches for Akademisk Boldklub.
en.allexperts.com /e/n/ni/niels_bohr.htm   (1754 words)

  
 SparkNotes: Niels Bohr: Important Terms and People
Bohr postulated that the nucleus might discharge this excess energy through the emission of radiation.
Harald Bohr - A beloved brother of Niels, who remained a close companion and confidant throughout their lives.
Bohr went to Cambridge with the hope of working with Thomson, but found him less interested than he had hoped.
www.sparknotes.com /biography/bohr/terms.html   (712 words)

  
 From Bohr's Atom to Electron Waves
Bohr's interpretation of the Balmer formula in terms of quantized angular momentum was certainly impressive, but his atomic model didn't make much mechanical sense, as he himself conceded.
Harald Bohr wrote to his brother from Göttingen in the fall of 1913 that the young physicists there considered Bohr's model too "bold" and "fantastic".
It was also good evidence that Bohr's theory was close to correct for the innermost electrons in the atom, those in the field of the unshielded nucleus.
galileo.phys.virginia.edu /classes/252/Bohr_to_Waves/Bohr_to_Waves.html   (2379 words)

  
 Harald Bohr correspondence
Harald Bohr Papers in Copenhagen is a very tiny fraction of the large amount of letters to and from Bohr which once existed.
Bohr writes about his participation in a meeting in Innsbruck (1924), displaced German mathematicians (1933-34), the Scandinavian congresses of mathematicians in Copenhagen (1946) and Trondheim (1949), Carl L. Siegel and Helen Braun's stay in Denmark (1947) and the attempt to create a professorship in Norway to keep Atle Selberg there.
The correspondence after 1945 is in English and kept in the Harald Bohr Archive Correspondence Folder, in the archival Courant file cabinets, Courant Institute of Mathematical Sciences, New York (not in the library).
www.math.ku.dk /ths/bohr_h/corresp.htm   (1516 words)

  
 Niels Henrik David Bohr
Niels (Henrik David) Bohr [nels ˈb̥oɐ̯ˀ] (October 7, 1885 – November 18, 1962) was a Danish physicist who made fundamental contributions to understanding atomic structure and quantum mechanics.
Bohr is widely considered one of the greatest physicists of the twentieth century.
After meeting with Bohr, J. Robert Oppenheimer suggested Bohr visit President Franklin Roosevelt to convince him that the Manhattan Project should be shared with the Russians in the hope of speeding up its results.
www.mlahanas.de /Physics/Bios/NielsHenrikDavidBohr.html   (1755 words)

  
 The Niels Bohr Archive
The Niels Bohr Archive (NBA) holds 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 (1885-1962).
Although the NBA has existed since shortly after Bohr's death in 1962, its future was only secured at the centennial of Bohr's birth in 1985, when a deed of gift from Bohr’s wife, Margrethe, provided the opportunity to establish the NBA as an independent not-for-profit institution.
Thus, in 1985 the Bohr family donated the bulk of Bohr's private correspondence, which includes letters to and from central personalities in culture and politics inside and outside Denmark.
www.bath.ac.uk /ncuacs/FP_Pors.htm   (1180 words)

  
 Meningar.com om Bohr. Niels, Copenhagen, Institute mm.
Bohr Books About the name Bohr: A fine house was built on Bohr land, with large windows, and smooth white walls; but before it, where the old house had in fact stood, was a little garden laid out, and a wild grapevine ran up the wall of the neighboring h..
Niels Bohr Institute (NBI) The Niels Bohr Institute is one of the four departments of the Niels Bohr Institute for Astronomy, Physics and Geophysics (NBIfAFG), University of Copenhagen, Denmark...
Bohr remained director of the institute for the rest of his life, except for his abse..
www.meningar.com /bohr.html   (1632 words)

  
 Bohr_Harald biography
Bohr and Landau proved that all but an infinitesimal proportion of the zeros of the zeta function lie in a small neighbourhood of the line s =
For most of his life Bohr was a sick man. He used to suffer from bad headaches and had to avoid all mental effort.
Bohr the man was not less remarkable than Bohr the mathematician.
www-gap.dcs.st-and.ac.uk /~history/Biographies/Bohr_Harald.html   (753 words)

  
 Biographie : Harald Bohr (22 avril 1887 [Copenhague] - 22 janvier 1951 [Copenhague])
Biographie : Harald Bohr (22 avril 1887 [Copenhague] - 22 janvier 1951 [Copenhague])
Harald Bohr (22 avril 1887 [Copenhague] - 22 janvier 1951 [Copenhague])
C'est un problème ouvert depuis environ 1850, sur lequel Bohr, seul ou en collaboration avec Landau, a réalisé des progrès remarquables.
www.bibmath.net /bios/index.php3?action=affiche&quoi=bohr   (481 words)

  
 Harald Bohr - Definition, explanation
Early in the lives of the brothers, Harald was thought to be more likely to be successful.
Harald Bohr worked in mathematical analysis, founding the field of almost periodic functions, and worked with the Cambridge mathematician G.
Bohr was also an excellent soccer player; he won a silver medal at the 1908 Summer Olympics with the Danish national football team.
www.calsky.com /lexikon/en/txt/h/ha/harald_bohr.php   (174 words)

  
 Amazon.com: "Harald Bohr": Key Phrase page   (Site not responding. Last check: 2007-10-15)
Another foreign student who was an integral part of the Gttingen scientific community was Harald Bohr.
At that time he was the better known of the Bohr brothers, having been a member of the Danish soccer...
Harald Bohr became one of the best soccer players in Denmark; he was even on the Danish team which won the silver...
www.amazon.com /phrase/Harald-Bohr   (508 words)

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