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définition - Leon_M._Lederman

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Wikipedia

Leon M. Lederman

                   
Leon M. Lederman
Born (1922-07-15) July 15, 1922 (age 89)
New York
Nationality United States
Fields Physics
Known for Neutrinos, bottom quark
Notable awards Nobel Prize in Physics, 1988

Leon Max Lederman (born July 15, 1922) is an American experimental physicist and Nobel Prize in Physics laureate for his work with neutrinos. He is Director Emeritus of Fermi National Accelerator Laboratory (Fermilab) in Batavia, Illinois, USA. He founded the Illinois Mathematics and Science Academy, in Aurora, Illinois in 1986, and has served in the capacity of Resident Scholar since 1998. [1]

Contents

  Career

Lederman graduated from the James Monroe High School in the South Bronx. He received his bachelor's degree from the City College of New York in 1943, and received a Ph.D. from Columbia University in 1951. He then joined the Columbia faculty and eventually became Eugene Higgins Professor of Physics. He took an extended leave of absence from Columbia in 1979 to become Fermilab's director. He resigned from Columbia and Fermilab in 1989 and taught briefly at the University of Chicago before moving to Illinois Institute of Technology, where he currently serves as the Pritzker Professor of Science. In 1991, Lederman became President of the American Association for the Advancement of Science.

Lederman is also one of the main proponents of the "Physics First" movement. Also known as "Right-side Up Science" and "Biology Last," this movement seeks to rearrange the current high school science curriculum so that physics precedes chemistry and biology.

A former president of the American Physical Society, Lederman also received the National Medal of Science, the Wolf Prize and the Ernest O. Lawrence Medal. Lederman serves as President of the Board of Sponsors of The Bulletin of the Atomic Scientists. He also served on the board of trustees for Science Service, now known as Society for Science & the Public, from 1989-1992. He was called a "modern day Leonardo Da Vinci" by the Chicago Museum of Science and Industry.[citation needed]

Among his achievements are the discovery of the muon neutrino in 1962 and the bottom quark in 1977. These helped establish his reputation as among the top particle physicists.

In 1977, a group of physicists led by Leon Lederman announced that a particle with a mass of about 6.0 GeV was being produced by the Fermilab particle accelerator. The particle's initial name was the greek letter Upsilon (\Upsilon\,). After taking further data, the group discovered that this particle did not actually exist, and the "discovery" was named "Oops-Leon" as a pun on the original name (mispronounced /ˈjuːpsɨlɒn/) and Dr. Lederman's first name.

In 1988, Lederman received the Nobel Prize for Physics along with Melvin Schwartz and Jack Steinberger "for the neutrino beam method and the demonstration of the doublet structure of the leptons through the discovery of the muon neutrino". [1] Lederman also received the National Medal of Science (1965), the Elliott Cresson Medal for Physics (1976), the Wolf Prize for Physics (1982) and the Enrico Fermi Award (1992).

Lederman was an early supporter of Science Debate 2008, an initiative to get the then-candidates for president, Barack Obama and John McCain, to debate the nation's top science policy challenges. In October 2010, Lederman participated in the USA Science and Engineering Festival's Lunch with a Laureate program where middle and high school students got to engage in an informal conversation with a Nobel Prize-winning Scientist over a brown bag lunch.[2] Lederman was also a member of the USA Science and Engineering Festival's Advisory Board [3] and CRDF Global.

  Personal life

Dr. Lederman was born in New York to a family of Jewish immigrants from Russia. His father operated a hand laundry while encouraging Leon to pursue his education. He went to elementary school in New York City, continuing on to college and his doctorate in the city.[4]

In his book,"The God Particle: If the Universe Is the Answer, What Is the Question?, Lederman writes that, although he was a chemistry major, he became fascinated with physics, because of the clarity of the logic and the unambiguous results from experimentation. His best friend during his college years, Martin Klein, convinced him of "the splendors of physics during a long evening over many beers." After that conversation he became resolute and unwavering regarding his desire to pursue physics. When he joined the Army with a B.S. in Chemistry, he was determined to become a physicist following his service.[5]

After three years in the army during World War II, he took up physics at Columbia University, and received his Masters in 1948. Lederman began his Ph.D research working with Columbia's Nevis synchro-cyclotron,[6] which was the most powerful particle accelerator in the world at that time.[7] Dwight D. Eisenhower, then the president of Columbia University, and future president of the United States, cut the ribbon dedicating the synchro-cyclotron in June 1950.[8] These atom smashers were just coming of age at this time and created the new discipline of particle physics.[9]

After receiving his Ph.D and then becoming a faculty member at Columbia University he was promoted to full professor in 1958.[10]

In "The God Particle" he once wrote "The history of atomism is one of reductionism - the effort to reduce all the operations of nature to a small number of laws governing a small number of primordial objects." [11] And this was the quest he undertook. This book shows that he pursued the quark, and hopes to find the Higgs boson. The top quark, which he and other physicists realized must exist according to the standard model, was, in fact, produced at Fermilab not long after this book was published.[12]

He is known for his sense of humor in the physics community,[13] and to anyone who has read his book, "The God Particle: If the Universe Is the Answer, What Is the Question?", which has very humorous moments. So, on August 26, 2008 Dr. Lederman was video-recorded by a science focused organization called ScienCentral, on the street in a major U.S. city, answering questions from passersby.[14] He answered questions such as "What is the strong force?" and "What happened before the Big Bang?".

He has three children with his first wife, Florence Gordon, and now lives with his second wife, Ellen, in Batavia, Illinois.[15]

  Publications

  See also

  References

  1. ^ a b Lederman, Leon M. (1988). Frängsmyr, Tore; Ekspång, Gösta. eds. "The Nobel Prize in Physics 1988: Leon M. Lederman, Melvin Schwartz, Jack Steinberger". Nobel Lectures, Physics 1981-1990 (Singapore: World Scientific Publishing Co.). http://www.nobelprize.org/nobel_prizes/physics/laureates/1988/lederman.html. Retrieved 22 May 2012. 
  2. ^ http://www.usasciencefestival.org/2010festival/schoolprograms/lunchwithalaureate
  3. ^ http://www.usasciencefestival.org/about/advisors
  4. ^ Lederman, Leon M. "Leon M. Lederman - Autobiography." http://nobelprize.org/nobel_prizes/physics/laureates/1988/lederman-autobio.html Retrieved 06 April 2009. Published 1988, The Nobel Foundation.
  5. ^ The God Particle: If the Universe is the Answer, What is the Question - page 5
    by Leon Lederman with Dick Teresi (copyright 1993) Houghton Mifflin Company
  6. ^ see High Energy Physics section on this page http://www.columbia.edu/cu/physics/news/DeptHistory/index/
  7. ^ The God Particle: If the Universe is the Answer, What is the Question - page 5
    by Leon Lederman with Dick Teresi (copyright 1993) Houghton Mifflin Company
  8. ^ Eisenhower at ribbon cutting for the dedication of the Nevis syncho-cyclotron http://www.columbia.edu/cu/physics/images/columbia-cyclotron.jpeg
  9. ^ The God Particle: If the Universe is the Answer, What is the Question - page 5
    by Leon Lederman with Dick Teresi (copyright 1993) Houghton Mifflin Company
  10. ^ The God Particle: If the Universe is the Answer, What is the Question - page 296
    by Leon Lederman with Dick Teresi (copyright 1993) Houghton Mifflin Company
  11. ^ The God Particle: If the Universe is the Answer, What is the Question - page 87
    by Leon Lederman with Dick Teresi (copyright 1993) Houghton Mifflin Company
  12. ^ Observation of Top Quark Production in [anti-p][and][p] Collisions with the Collider Detector at Fermilab http://prola.aps.org/abstract/PRL/v74/i14/p2626_1
  13. ^ The God Particle: If the Universe is the Answer, What is the Question - page 17 by Leon Lederman with Dick Teresi (copyright 1993) Houghton Mifflin Company
  14. ^ Street Corner Science with Leon Lederman,
    http://blogs.discovermagazine.com/cosmicvariance/2008/08/26/street-corner-science-with-leon-lederman
  15. ^ Lederman, Leon M. "Leon M. Lederman - Autobiography." http://nobelprize.org/nobel_prizes/physics/laureates/1988/lederman-autobio.html Retrieved 29.7.2008. Published 1988, The Nobel Foundation.

  External links

   
               

 

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