
5 years on board Kajen
| 22. 10.1933 | born in Frankfurt/Main as the oldest of five children of Albert Breuer and his wife Erna. | 
| 1952 | Abitur at Schinkel-Gymnasium, Berlin | 
| 1952 - 1958 | Student of Physics at the Universities of Berlin and Frankfurt | 
| July 1958 | Diplom-Physiker degree, University of Frankfurt, Germany  Thesis: A Range-Energy-Relation for Fast Electrons.  | 
| January 1957 - April 1962 | Scientist at the Max-Planck-Institute for Biophysics in Frankfurt | 
| February 1962 | Dr. phil. nat. (PhD) degree, University of Frankfurt, Germany  Thesis : Spectrum of Photo neutrons from Lead  | 
| May 1962 - April 1964 | Student of Medicine at the Universities of Innsbruck and Tübingen  as a Fellow of the Studienstiftung des Deutschen Volkes Student of German Literature with Walter Jens, Tübingen  | 
| May 1964 - April 1965 | Postdoctoral Fellow, National Research Council of Canada  Research at the Linear Accelerator Centre, Saskatoon, Saskatchewan, Canada  | 
| July 1966 | Scientist at the Technical University of Darmstadt, Germany | 
| July 1967 | married to Rosemarie Berg | 
| April 1968 | First son, Klaus, is born | 
| August 1967 - June 1969 | Assistant Professor of Physics, University of Saskatchewan, Saskatoon,
Canada  Teaching: Basis Physics, Modern Physics, Physics for Life Sciences  | 
| June 1969 | Promotion to Associate Professor  Tenure was granted  | 
| August 1969 , - July 1971 | Associate Professor of Physics, California State College, California,
Pa, USA  Teaching: Modern Physics, Physics for Life Science Students Administration: Setting up new Physics Faculty Received Tenure  | 
| March 1970 | Second son, Hannes, is born | 
| August 1971 | Independent author while living on board his sailing yacht for 5 years | 
| September 1976 - December 1976 | Visiting Professor at the Max-Planck-Institute of Biophysics in Frankfurt, Germany | 
| January 1977 - May 1981 | Scientific Officer, P4, at the International Atomic Energy Agency, Vienna, Austria  Duties: Editing ATOMINDEX, Educating referees of scientific literature  | 
| February 1977 | Third son, Florian, born | 
| October 1981 | Emigration to South Africa | 
| October 1981- December 1984 | Principal Scientist, National Accelerator Laboratory, Faure, South Africa | 
| November 1983 - December 1985 | Senior Lecturer  part time , University of Cape Town Lectures: Physics for Medical Students, How to Write a Thesis Setting up of access to data banks, Application of lasers in medicine  | 
| January 1985 - December 1989 | Consultant at Medical School, UCT Advising Prof. Bruno Reichard on Lasers in Medicine  Developing recanalisation of blood vessels by laser Lectures: Physics for Medical Staff and Nurses Supervising Ph.D.- and Master theses  | 
| Since 1991 | Hon. Lecturer, University of Cape Town, Medical Faculty | 
Since 1985:  Independent Consultant and Author
Director of Stellenbosch Scientific Instruments CC
Consultant for Lasers in medicine, especially developing instrumentation and methods for recanalisation.
Co-Author (with Klaus, Hannes and Florian Breuer) of a complex planning program for proton- radiotherapy planning, 1993 - 96
Honorary Lecturer at the Department for Bio Medical Engineering, University of Cape Town.
Hans Breuer died on 19 April 2020 at Somerset West.