- Freeman Dyson
name = Freeman Dyson
image_width = 200px
caption = Freeman Dyson
birth_date = Birth date and age|1923|12|15
Crowthorne, Berkshire, England
nationality = UK
University of Cambridge
Royal Air Force Institute for Advanced Study Duke University Cornell University
doctoral_advisor = None
Dyson sphere Dyson operator
footnotes = He is notably the son of
George Dyson (composer), and father of Esther Dysonand George Dyson (science historian).
Freeman John Dyson FRS (born
December 15, 1923) is an English-born [ [http://news.bbc.co.uk/1/hi/sci/tech/740688.stm BBC News | SCI/TECH | Scientist wins $1m religion prize ] ] American [Freeman Dyson: Disturbing the universe, pg 131, "I had finally become an American...The decision to abjure my allegiance to Queen Elizabeth might have been a difficult one, but the Queen's ministers made it easy for me."] theoretical physicistand mathematician, famous for his work in quantum field theory, solid-state physics, and nuclear engineering. He is a lifelong opponent of nationalismand a proponent of nuclear disarmamentand international cooperation. Dyson is a member of the Board of Sponsors of The Bulletin of the Atomic Scientists. [ [http://www.thebulletin.org Bulletin of the Atomic Scientists] ]
Dyson's father was the English composer George Dyson. Despite sharing a last name, he is not related to early 20th century astronomer
Frank Watson Dyson. However, as a small boy, Freeman Dyson was aware of Frank Watson Dyson; Freeman credits the popularity of someone with the same last name with inadvertently helping to spark his interest in science. Dyson received an honorary Sc.D. from Bates Collegein 1990.
Dyson's mother was trained as a lawyer but worked, after Dyson was born, as a social worker. [ [http://www.wildriverreview.com/quarkpark_dyson.php Wild River Review Interview by Joy E. Stocke] ]
His wife, Imme Dyson, is an accomplished masters runner.
Dyson has six children. One daughter is
Esther Dyson, the noted digital technology consultant. His son, George Dyson, is a historian of technology, one of whose books is "Project Orion: The Atomic Spaceship 1957-1965".
Esther Dyson, his daughter:
Dyson worked as an analyst for
RAF Bomber Commandat RAF Wytonduring World War II. [ "A Failure of Intelligence", Essay in "Technology Review" (Nov–Dec 2006)] After the war, he obtained a BA in mathematics from Cambridge University (1945) and was a Fellow of Trinity College, Cambridgefrom 1946 to 1949. In 1947 he moved to the US, on a fellowship at Cornell Universityand thence joined the faculty there as a physics professor in 1951 without a PhD. He was elected a FRS in 1952 [ [http://www.royalsoc.ac.uk/view_fellow.cfm?FID=423&N=d Royal Society directory entry] ] In 1953, he took up a post at the Institute for Advanced Studyin Princeton, NJ. In 1957, he became a naturalised citizenof the United States.
Prof. Dyson is best known for demonstrating in 1949 the equivalence of the formulations of
quantum electrodynamicsthat existed by that time -- Richard Feynman's diagrammatic path integral formulationand the operator method developed by Julian Schwingerand Sin-Itiro Tomonaga. A by-product of that demonstration was the invention of the Dyson series[F. J. Dyson, "Phys. Rev." 75, 486, 1736 (1949)] .
Dyson also did work in a variety of topics in mathematics, such as topology, analysis, number theory and random matrices.
From 1957 to 1961 he worked on the Orion Project, which proposed the possibility of space-flight using
nuclear pulse propulsion. A prototype was demonstrated using conventional explosives, but a treaty which he was involved in and supported, banned the testing of nuclear weapons other than underground, and this caused the project to be abandoned.
In 1958 he led the design team for the
TRIGA, a small, inherently safe nuclear reactor used throughout the world in hospitals and universities for the production of isotopes.
A seminal work by Dyson came in 1966 when, together with
A. Lenardand independently of Elliott H. Lieband Walter Thirring, he proved rigorously that the exclusion principle plays the main role in the stability of bulk matter [F. J. Dyson, A. Lenard, "J. Math. Phys." 8, 3, 423-434 (1967); F. J. Dyson, A. Lenard, "J. Math. Phys.", 9, 5, 698-711 (1968); E. H. Lieb, W. Thirring, "Phys. Rev. Lett." 35, 687-689 (1975).] . Hence, it is not the electromagnetic repulsion between electrons and nuclei that is responsible for two wood blocks that are left on top of each other not coalescing into a single piece, but rather it is the exclusion principle applied to electrons and protons that generates the classical macroscopic normal force. In condensed matter physics, Dyson also did studies in the phase transition of the Ising model in 1 dimension and spin wavesSee F. J. Dyson, E. H. Lieb, "Selected papers by Freeman Dyson", AMS (1996).]
Dyson was awarded the
Lorentz Medalin 1966 and Max Planck medalin 1969.
In 1977, Dyson supervised Princeton undergraduate
John Aristotle Phillipsin a term paper that outlined a credible design for a nuclear weapon. This earned Phillips the nickname "The A-Bomb Kid".
In the 1984–85 academic year he gave the
Gifford lecturesat Aberdeen, which resulted in the book " Infinite In All Directions".
In 1989, Dyson taught at
Duke Universityas a Fritz LondonMemorial Lecturer. In the same year, he was elected as an Honorary Fellow of Trinity College, University of Cambridge.
Dyson has published a number of collections of speculations and observations about technology, science, and the future. In 1996 he was awarded the Lewis Thomas Prize for Writing about Science.
In 1998, Dyson joined the board of the
Solar Electric Light Fund. In 2000, Dyson was awarded the Templeton Prizefor Progress in Religion. As of 2003, Dyson is the president of the Space Studies Institute, the space research organisation founded by Gerard K. O'Neill.
In 2003, Dyson was awarded the Telluride Tech Festival Award of Technology in Telluride, Colorado.
Dyson is a long-time member of the
JASONdefence advisory group.
Biotechnology and genetic engineering
Dyson cheerfully admits his record as a prophet is mixed, but "it is better to be wrong than to be vague." [ Dyson, 1999, "The Sun, the Genome, and the Internet"]
In 1960 Dyson wrote a short paper for the journal "Science", entitled "Search for Artificial Stellar Sources of Infrared Radiation". [cite journal| title=Search for Artificial Stellar Sources of Infrared Radiation| doi=10.1126/science.131.3414.1667| journal=Science| volume= 131| pages= 1667–1668| first=Freeman J.| last=Dyson| year=1960 | month=3 June| issue=3414| pmid=17780673] In it, he theorised that a technologically advanced
societymight completely surround its native star in order to maximise the capture of the star's available energy. Eventually, the civilisation would completely enclose the star, intercepting electromagnetic radiationwith wavelengths from visible light downwards and radiating waste heat outwards as infraredradiation. Therefore, one method of searching for extraterrestrial civilisations would be to look for large objects radiating in the infrared range of the electromagnetic spectrum.
Dyson conceived that such structures would be clouds of
asteroid-sized space habitats, though science fictionwriters have preferred a solid structure: either way, such an artifact is often referred to as a Dyson sphere, although Dyson himself used the term "shell". Dyson says that he used the word "artificial biosphere" in the article meaning a habitat, not a shape. [20 minutes into [http://video.google.com/videoplay?docid=350379535220823176&q=genome a video] ]
Dyson has also proposed the creation of a "Dyson tree", a genetically-engineered plant capable of growing on a
comet. He suggested that comets could be engineered to contain hollow spaces filled with a breathable atmosphere, thus providing self-sustaining habitats for humanity in the outer solar system.
Freeman Dyson has been interested in space travel since he was a child, reading such
science fictionclassics as Olaf Stapledon's " Star Maker". As a young man, he worked for General Atomicson the nuclear-powered Orion spacecraft. He hoped Project Orion would put men on Mars by 1965, Saturn by 1970. He's been unhappy for a quarter-century on how the government conducts space travel:
He still hopes for cheap space travel, but is resigned to waiting for private entrepreneurs to develop something new—and cheap.
cquote|No law of physics or biology forbids cheap travel and settlement all over the solar system and beyond. But it is impossible to predict how long this will take. Predictions of the dates of future achievements are notoriously fallible. My guess is that the era of cheap unmanned missions will be the next fifty years, and the era of cheap manned missions will start sometime late in the twenty-first century. Any affordable program of manned exploration must be centred in biology, and its time frame tied to the time frame of biotechnology; a hundred years, roughly the time it will take us to learn to grow warm-blooded plants, is probably reasonable.
Dyson also has some credits in
elementary number theory. His concept "Dyson's transform" led to one of the most important lemmas of Olivier Ramaré's theorem that every even integer can be written as a sum of no more than six primes.
Dyson agrees with the general theory of anthropogenic
global warming, and has writtenHowever, he has argued that existing simulation models of climate fail to account for some important factors, and hence the results will contain too much error to reliably predict future trends.He has also argued against the ostracisation of scientists who oppose the Global warming consensus, stating that heretics have historically been an important force in driving scientific progress.He also believes that directing money towards fighting global poverty and providing medical aid will bring greater benefits to society than attempting to combat climate change.
Dyson was an early proponent of Carbon sequestration by plants by planting gigantic areas of trees as long ago as 1976. [cite web|url=http://www.thecornerhouse.org.uk/item.shtml?x=51971#fn001ref|title=The Dyson Effect: Carbon 'Offset' Forestry and The Privatization of the Atmosphere|author=Larry Lohmann|date=July 1999|publisher=
The Cornerhouse|accessdate=2007-09-05] He revisited this subject in 2007 where he asserted that the "fuss about global warming is grossly exaggerated", having calculated that "the problem of carbon dioxide in the atmosphere is a problem of land management, not a problem of meteorology." The failures of climate scientists to understand this was due to his belief that "No computer model of atmosphere and ocean can hope to predict the way we shall manage our land."cite web|url=http://www.edge.org/3rd_culture/dysonf07/dysonf07_index.html|publisher=Edge|title=heretical Thoughts about Science and Society|date= 8 August 2007|author=Freeman Dyson|accessdate=2007-09-05]
Dyson has questioned the predictive value of current computational models of
climate change, urging instead more extensive use of local observations.
Dyson regards the term "global warming" as a misnomer, pointing out that warming will not occur uniformly throughout the world, but will instead be subject to regional variations:
Regarding political efforts to reduce the causes of climate change, Dyson argues that other global problems should take priority.
British Bomber Command, Dyson and colleagues proposed ripping out two gun turrets from the RAF Lancaster bombers, to cut the catastrophic losses to German fighters in the Battle of Berlin. A Lancaster without turrets could fly convert|50|mph|-1|abbr=on faster and be much more manoeuvrable.
Warfare and weapons
On hearing the news of the bombing of
The role of failure
On English academics
cquote|My view of the prevalence of doom-and-gloom in Cambridge is that it is a result of the English class system. In England there were always two sharply opposed middle classes, the academic middle class and the commercial middle class. In the nineteenth century, the academic middle class won the battle for power and status. As a child of the academic middle class, I learned to look on the commercial middle class with loathing and contempt. Then came the triumph of Margaret Thatcher, which was also the revenge of the commercial middle class. The academics lost their power and prestige and the business people took over. The academics never forgave Thatcher and have been gloomy ever since. [cite web|url=http://www.staff.livjm.ac.uk/spsbpeis/Freeman-Dyson.htm
title=The Scientist as a Rebel: An interview with Freeman Dyson|author=Benny Peiser|date=
14 March 2007|accessdate=2007-09-05|publisher=CCNet]
cience and Religion
Dyson strongly opposes
reductionism. He is a non-denominationalChristian and has attended various churches from Presbyterianto Roman Catholic. Regarding doctrinal or christologicalissues, he has said "I am neither a saint nor a theologian. To me, good works are more important than theology." [http://www.edge.org/documents/archive/edge68.html Templeton Prize Lecture] ]
cquote| Science and religion are two windows that people look through, trying to understand the big universe outside, trying to understand why we are here. The two windows give different views, but they look out at the same universe. Both views are one-sided, neither is complete. Both leave out essential features of the real world. And both are worthy of respect.
Trouble arises when either science or religion claims universal jurisdiction, when either religious or scientific dogma claims to be infallible. Religious creationists and scientific materialists are equally dogmatic and insensitive. By their arrogance they bring both science and religion into disrepute. The media exaggerate their numbers and importance. The media rarely mention the fact that the great majority of religious people belong to moderate denominations that treat science with respect, or the fact that the great majority of scientists treat religion with respect so long as religion does not claim jurisdiction over scientific questions.
Dyson disagrees with the famous remark by his fellow-physicist
Steven Weinbergthat "Good people will do good things, and bad people will do bad things. But for good people to do bad things—that takes religion." [http://www.nybooks.com/articles/19090 NYRB June 22, 2006] ]
The fictional character
Gordon Freemanin the Half-Life franchise was named after Dyson. [cite book
last = Hodgson
first = David
publisher = Prima Games
year = 2004
pages = p. 30
isbn = 0-7615-4364-3]
As noted above, the
Dyson sphereis a favourite of science-fiction authors. See Dyson spheres in fiction.
The 2005 Global Intellectuals Poll
Dyson's eternal intelligence
Institute for Advanced Study
List of science and religion scholars
* "Symmetry Groups in Nuclear and Particle Physics", 1966 (Academic-oriented text)
* "Disturbing the Universe", 1979
* "Weapons and Hope", 1984
* "Origins of Life", 1986
Infinite in All Directions", 1988
* "From Eros to Gaia", 1992
* "Selected Papers of Freeman Dyson", 1996
* "Imagined Worlds",
Harvard University Press1997, ISBN 978-0-674-53908-2
* "The Sun, The Genome and The Internet", 1999
* "L'mportanza di essere imprevedibile", Di Renzo Editore, 2003
The Scientist as Rebel", 2006
* "Advanced Quantum Mechanics", World Scientific, 2007. Dyson's 1951 Cornell lecture notes transcribed by David Derbes.
* "A Many-Colored Glass: Reflections on the Place of Life in the Universe", University of Virginia Press, 2007
*Brower, Kenneth, 1978. "The Starship and the Canoe", Holt Rinehart and Winston.
*Schweber, Sylvan S., 1994. "QED and the men who made it : Dyson, Feynman, Schwinger, and Tomonaga". Princeton Univ. Press.
* [http://www.sns.ias.edu/~dyson/ Freeman J. Dyson's homepage]
* [http://www.edge.org/3rd_culture/bios/dysonf.html Freeman Dyson Biography]
* [http://www.wired.com/wired/6.02/dyson.html Wired magazine interview: Freeman Dyson's Brain ]
* [http://video.google.com/videoplay?docid=350379535220823176&q=genome A google video: interviewer: Robert Wright editor: Greg Dingle ]
* [http://www.radiophiles.org listen to a Freeman Dyson interview on Radiophiles.org ]
* [http://www.npr.org/rundowns/segment.php?wfId=4139566 audio of NPR interview with Freeman Dyson]
* [http://www.bbc.co.uk/bbcfour/audiointerviews/profilepages/dysonf1.shtml Disturbing the Universe: Interview with Freeman Dyson]
* [http://news.bbc.co.uk/1/hi/sci/tech/740688.stm Freeman Dyson wins $1m religion prize]
* [http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=search&term=Dyson+F Freeman Dyson's scientific publications] from
* [http://www.itconversations.com/shows/detail170.html In Praise of Open Thinking, audio from a panel discussion with his son George on ITConversations.com]
* [http://www.seedmagazine.com/news/2006/03/on_my_mind_freeman_dyson.php Seed Magazine: On My Mind: Freeman Dyson]
* [http://www.edge.org/documents/archive/edge68.html Templeton Prize acceptance lecture 2000]
* [http://www.gigadial.net/public/station/11253?page=10&station_id=11253 The Space Show radio interview]
* [http://www.nybooks.com/articles/20370 "Our Biotech Future"] , essay by Freeman Dyson, 2007
* [http://www.sfsite.com/08b/sun63.htm Review, "The Sun, the Genome, and the Internet"]
* [http://www.wildriverreview.com/quarkpark_dyson.php The Wild River Review "The Scientist as Rebel"]
* [http://www.aip.org/history/ohilist/4585.html Oral History interview transcript with Freeman J. Dyson 17 December 1986, American Institute of Physics, Niels Bohr Library and Archives]
* [http://www.nybooks.com/authors/514 Dyson author page and archive from] "
The New York Review of Books"
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DATE OF BIRTH=Birth date and age|1923|12|15|mf=y
PLACE OF BIRTH=
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Freeman Dyson — Nacimiento 15 de diciembre de 1923 Crowthorne, Berkshire, Inglaterra … Wikipedia Español
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Freeman Dyson — Freeman John Dyson nació el 15 de diciembre de 1923 en Inglaterra. Físico y matemático. Trabajó para el British Bomber Command durante la Segunda Guerra Mundial. Una vez finalizada, se trasladó a Princeton (USA) y se nacionalizó estadounidense.… … Enciclopedia Universal
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Dyson — may refer to:People*Andre Dyson (b. 1979), American Football player *Charles W. Dyson (1861 ndash; 1930), a US Navy Rear Admiral *George Dyson (composer) (1883 1964), English composer, father of Freeman Dyson *Freeman Dyson (b. 1923), physicist,… … Wikipedia
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Dyson — bezeichnet: Dyson (Mondkrater) Dyson (Unternehmen), ein Technologieunternehmen u.a. Staubsauger Dyson Gleichung Dyson Schwinger Gleichungen das hypothetische Konstrukt der Dyson Sphäre, benannt nach Freeman Dyson Personen: Esther Dyson (* 1951),… … Deutsch Wikipedia
Dyson (Homonymie) — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Le mot Dyson peut faire référence à : Dyson, une société britannique d électroménager design, créée en 1993 par : James Dyson (1947 ), KBE,… … Wikipédia en Français
Freeman — can mean any of the following:Things* An individual not tied to land under medieval serfdom, unlike a villein or serf * A person who has been awarded Freedom of the City or Freedom of the Company in a Livery Company * Freeman and Freeman II ,… … Wikipedia