26 moments

1. Birth in Copenhagen

   1885-10-07 · Copenhagen, Denmark

   

   Niels Henrik David Bohr was born in Copenhagen.

2. Undergraduate studies

   1903-01-01 · University of Copenhagen, Copenhagen, Denmark

   

   Bohr began undergraduate study at the University of Copenhagen, majoring in physics. The source supplies the year but not a more precise enrollment date.

3. Doctoral defence

   1911-05-13 · University of Copenhagen, Copenhagen, Denmark

   

   Bohr formally defended his doctoral thesis at Copenhagen University. The university is established in the immediately preceding discussion of the Copenhagen University thesis; coordinates represent the university's historic central campus.

4. Cambridge research visit

   1911-09-01 · Cavendish Laboratory and Trinity College, Cambridge, England, United Kingdom

   

   Supported by a Carlsberg Foundation fellowship, Bohr travelled to England and met J. J. Thomson at Cambridge's Cavendish Laboratory and Trinity College. Coordinates represent central Cambridge near Trinity College; the original Cavendish Laboratory was nearby.

5. Marriage at Slagelse Town Hall

   1912-08-01 · Slagelse Town Hall, Slagelse, Denmark

   

   Bohr and Margrethe Nørlund married in a civil ceremony. Coordinates represent Slagelse town hall.

6. Tyrol holiday and university visits

   1914-01-01 · Tyrol, Austria

   

   Before taking up work in England, Bohr holidayed in Tyrol and visited universities at Göttingen and Munich, where he met Arnold Sommerfeld and led seminars on his atomic-theory papers. The source establishes the year through the outbreak of the First World War but does not give a more precise date. Coordinates are a representative point for the Tyrol region.

7. Work in England

   1914-10-01 · England, United Kingdom

   

   Bohr arrived in England with Margrethe to begin his Manchester appointment and remained in the country until July 1916. The source establishes England rather than a specific English residence for the full interval; coordinates are a representative point for England.

8. Institute opening and residence

   1921-03-03 · Institute of Theoretical Physics, University of Copenhagen, Copenhagen, Denmark

   

   Bohr became director when the University of Copenhagen's Institute of Theoretical Physics opened; his family moved into its first-floor apartment. Coordinates represent the Niels Bohr Institute site on Blegdamsvej.

9. Hamburg stopover

   1925-12-01 · Hamburg, Germany

   

   While travelling to Leiden for Hendrik Lorentz's doctorate-anniversary celebrations, Bohr stopped in Hamburg and met Wolfgang Pauli and Otto Stern. The preceding sentence dates the trip to the month after November 1925.

10. Lorentz jubilee visit

    1925-12-01 · Leiden, Netherlands

    

    Bohr travelled to Leiden for celebrations marking the fiftieth anniversary of Hendrik Lorentz receiving his doctorate. The preceding sentence dates the trip to the month after November 1925.

11. Return meeting at Göttingen

    1925-12-01 · University of Göttingen, Göttingen, Germany

    

    On his return from Leiden, Bohr met Werner Heisenberg and Pascual Jordan at Göttingen amid the early debates about electron spin. The return journey follows the December 1925 Leiden visit.

12. Como Conference paper

    1927-09-01 · Como, Italy

    

    Bohr presented a paper at the Como Conference, advancing his account of complementarity and uncertainty relations.

13. Fifth Solvay Conference

    1927-10-01 · Brussels, Belgium

    

    Bohr attended the fifth Solvay Conference, a major gathering in the debates over quantum mechanics. The source is the article's contemporaneous photograph caption.

14. Carlsberg Honorary Residence

    1932-01-01 · Carlsberg Academy, Copenhagen, Denmark

    Bohr and his family moved to the Carlsberg Honorary Residence after the Royal Danish Academy of Sciences and Letters granted him occupancy. Carlsberg Academy is the present name of the Carlsberg Honorary Residence.

15. Refugee-scholar discussions

    1933-05-01 · United States

    

    During a visit to the United States, Bohr discussed Rockefeller Foundation support for refugee academics with its president, Max Mason. The source identifies the country but not the city; coordinates are a representative point for the United States.

16. Washington Conference on Theoretical Physics

    1939-01-26 · Washington, D.C., United States

    

    Bohr and Enrico Fermi opened the fifth Washington Conference on Theoretical Physics, where Bohr brought news of nuclear fission to the United States.

17. Heisenberg meeting during occupation

    1941-09-01 · Copenhagen, Denmark

    

    Werner Heisenberg visited Bohr in Copenhagen for their consequential and later disputed wartime discussion of nuclear energy, morality, and war.

18. Institute for Advanced Study visit

    1943-01-01 · Institute for Advanced Study, Princeton, New Jersey, United States

    

    During his initial United States mission, Bohr visited Albert Einstein and Wolfgang Pauli at the Institute for Advanced Study. The sentence follows the documented 8 December 1943 arrival in Washington but does not date the Princeton visit more precisely.

19. Los Alamos visits

    1943-01-01 · Los Alamos, New Mexico, United States

    Bohr went to Los Alamos, where the weapons were being designed, and subsequently made a series of extended wartime visits. The source places this trip during Bohr's 1943 United States mission but does not state a more precise arrival date.

20. Escape to Sweden

    1943-09-29 · Sweden

    With the threat of arrest under Nazi occupation, Bohr and his wife escaped by sea to Sweden with help from the Danish resistance. The source identifies Sweden but not the landing place; coordinates are a representative point for Sweden.

21. Tube Alloys office

    1943-10-01 · St James's Palace, London, England, United Kingdom

    After arriving in Britain, Bohr was housed at St James's Palace and given an office with the Tube Alloys nuclear-weapons development team. The arrangement followed his arrival in Scotland on 6 October 1943; the source does not provide a more precise date.

22. Arrival in Scotland

    1943-10-06 · Scotland, United Kingdom

    Bohr flew from Sweden to Britain in a BOAC de Havilland Mosquito to join the Allied nuclear-weapons effort. The source identifies Scotland but not a specific airfield; coordinates are a representative point for Scotland.

23. Manhattan Project consultation

    1943-12-08 · Washington, D.C., United States

    

    Bohr arrived in Washington as a Tube Alloys consultant and met Manhattan Project director Leslie R. Groves Jr.

24. Return to Copenhagen after the war

    1945-08-25 · Copenhagen, Denmark

    

    After the end of the Second World War, Bohr returned to Copenhagen and soon resumed leadership in Danish scientific institutions.

25. At the Institute in later life

    1957-01-01 · Institute of Theoretical Physics, University of Copenhagen, Copenhagen, Denmark

    

    Bohr was photographed in front of his Institute for Theoretical Physics during its postwar expansion and the year CERN's theory group moved to Geneva. The source is the University of Copenhagen's caption for a 1957 photograph.

26. Death at Carlsberg home

    1962-11-18 · Carlsberg Academy, Copenhagen, Denmark

    Bohr died of heart failure at his home in Copenhagen's Carlsberg district. Coordinates represent the Carlsberg Honorary Residence, where Bohr had lived from 1932.