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قديم 05 - 06 - 2010, 21:23
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افتراضي Dennis Gabor










Dennis Gabor



Dennis Gabor
Born 5 June 1900(1900-06-05)
Budapest, Hungary
Died 8 February 1979 (aged 78)
London, England

Citizenship British / Hungarian
Fields Electrical engineering
Institutions Imperial College London
British Thomson-Houston
Alma mater Technical University of Berlin
Technical University of Budapest
Known for Invention of holography
Notable awards Nobel Prize in Physics (1971)
IEEE Medal of Honor (1970)




Dennis Gabor (original Hungarian name: Gábor Dénes) CBE, FRS, (5 June 1900, Budapest – 8 February 1979, London) was a British-Hungarian[1] Jewish electrical engineer and inventor, most notable for inventing holography, for which he later received the 1971 Nobel Prize in Physics.




Biography
He was born as Gábor Dénes,[2] into a Jewish family in Budapest, Hungary.[3] He served with the Hungarian artillery in northern Italy during World War I.[3] He studied at the Technical University of Budapest from 1918, later in Germany, at the Charlottenburg Technical University in Berlin, now known as the Technical University of Berlin.[2] At the start of his career, he analyzed the properties of high voltage electric transmission lines by using cathode-beam oscillographs, which led to his interest in electron optics.[2] Studying the fundamental processes of the oscillograph, Gabor was led to other electron-beam devices such as electron microscopes and TV tubes. He eventually wrote his Ph.D. thesis concerning the cathode ray tube in 1927, and worked on plasma lamps.[2]
As a Jew, Gabor fled from Nazi Germany in 1933, and was invited to Britain to work at the development department of the British Thomson-Houston company in Rugby, Warwickshire. During his time in Rugby, he met Marjorie Butler, and they married in 1936. He became a British citizen in 1946,[4] and it was while working at British Thomson-Houston that he invented holography, in 1947.[5] He experimented with a heavily filtered mercury arc light source. [2] However, the earliest hologram was only realized in 1964 following the 1960 invention of the laser, the first coherent light source. After this, holography became commercially available.
Gabor's research focused on electron inputs and outputs, which led him to the invention of re-holography.[2] The basic idea was that for perfect optical imaging, the total of all the information has to be used; not only the amplitude, as in usual optical imaging, but also the phase. In this manner a complete holo-spatial picture can be obtained.[2] Gabor published his theories of re-holography in a series of papers between 1946 and 1951.[2]
Gabor also researched how human beings communicate and hear; the result of his investigations was the theory of granular synthesis, although Greek composer Iannis Xenakis claimed that he was actually the first inventor of this synthesis technique.[6]
In 1948 Gabor moved from Rugby to Imperial College London, and in 1958 became professor of Applied Physics until his retirement in 1967. While spending much of his retirement in Italy, he remained connected with Imperial College as a Senior Research Fellow and also became Staff Scientist of CBS Laboratories, in Stamford, Connecticut; there, he collaborated with his life-long friend, CBS Labs' president Dr. Peter C. Goldmark in many new schemes of communication and display. One of Imperial College's new halls of residence in Prince's Gardens, Knightsbridge is named Gabor Hall in honour of Gabor's contribution to Imperial College. He developed an interest in social analysis and published The Mature Society: a view of the future in 1972.
Following the rapid development of lasers and a wide variety of holographic applications (e.g., art, information storage, and the recognition of patterns), Gabor achieved acknowledged success and worldwide attention during his lifetime.[2] He received numerous awards besides the Nobel Prize.


Awards

1956 – Fellow of the Royal Society
1964 – Honorary Member of the Hungarian Academy of Sciences
1964 – D.Sc., University of London
1967 – Young Medal and Prize, for distinguished research in the field of optics
1967 – Colombus Award of the International Institute for Communications, Genoa
1968 – Albert Michelson Medal of The Franklin Institute, Philadelphia
1968 – Rumford Medal of the Royal Society
1970 – Honorary Doctorate, University of Southampton
1970 – Medal of Honor of the Institute of Electrical and Electronics Engineers
1970 – Commander of the Order of the British Empire (CBE)
1971 – Nobel Prize in Physics, for his invention and development of the holographic method
1971 – Honorary Doctorate, Delft University of Technology
1972 – Prix Holweck of the Société Française de Physique
Dennis-Gabor Strasse in Potsdam is named in his honor and is the ************************ of the Potsdamer Centrum für Technologie.
2009 – Imperial College London opens Gabor Hall, a hall of residence named in his honor



Dennis Gabor

 
 
 
 
 





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