Chapter Two the Fission Bomb Had to Come First
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
WINTER 2013 - Volume 60, Number 4 the Air Force Historical Foundation Founded on May 27, 1953 by Gen Carl A
WINTER 2013 - Volume 60, Number 4 WWW.AFHISTORICALFOUNDATION.ORG The Air Force Historical Foundation Founded on May 27, 1953 by Gen Carl A. “Tooey” Spaatz MEMBERSHIP BENEFITS and other air power pioneers, the Air Force Historical All members receive our exciting and informative Foundation (AFHF) is a nonprofi t tax exempt organization. Air Power History Journal, either electronically or It is dedicated to the preservation, perpetuation and on paper, covering: all aspects of aerospace history appropriate publication of the history and traditions of American aviation, with emphasis on the U.S. Air Force, its • Chronicles the great campaigns and predecessor organizations, and the men and women whose the great leaders lives and dreams were devoted to fl ight. The Foundation • Eyewitness accounts and historical articles serves all components of the United States Air Force— Active, Reserve and Air National Guard. • In depth resources to museums and activities, to keep members connected to the latest and AFHF strives to make available to the public and greatest events. today’s government planners and decision makers information that is relevant and informative about Preserve the legacy, stay connected: all aspects of air and space power. By doing so, the • Membership helps preserve the legacy of current Foundation hopes to assure the nation profi ts from past and future US air force personnel. experiences as it helps keep the U.S. Air Force the most modern and effective military force in the world. • Provides reliable and accurate accounts of historical events. The Foundation’s four primary activities include a quarterly journal Air Power History, a book program, a • Establish connections between generations. -
Building 9731 – Secret City Festival’S Y-12 Public Tour Or: Building 9731 to Be Featured in Secret City Festival's Public Tour (Title Provided by the Oak Ridger)
Building 9731 – Secret City Festival’s Y-12 public tour Or: Building 9731 to be featured in Secret City Festival's public tour (title provided by The Oak Ridger) In March 1943 the very first structure to be completed at the newly emerging Y-12 Electromagnetic Separation Plant was Building 9731. It was only a little over a month earlier that ground had been broken for the first of nine major buildings designed to hold cautrons (CALifornia University Cyclotron). But the real push had been to complete the construction of a smaller building, one with a high bay and especially designed to house four very special units of newly designed equipment using huge magnets. The Alpha Calutron magnets stand well over 20 feet tall and are still standing there today―the only ones in the world! For the first time ever, the public will have a chance to see these huge magnets and will also be able to tour inside historic Building 9731. This historic event is a part of the Secret City Festival this year. On Saturday, June 19, 2010, from 9:00 AM to 4:00 PM, a major part of the Y-12 public tour will include Building 9731. The public will be allowed to see inside the historic structure and view the magnets of both the two Alpha and two Beta calutrons. These calutron magnets have been designated as Manhattan Project Signature Artifacts by the Depart- ment of Energy’s Federal Preservation Officer in the DOE Office of History and Heritage Resources. The building is being submitted for Historical Landmark status on the National Register of Historic Places. -
6. Knowledge, Information, and Entropy the Book John Von
6. Knowledge, Information, and Entropy The book John von Neumann and the Foundations of Quantum Physics contains a fascinating and informative article written by Eckehart Kohler entitled “Why von Neumann Rejected Carnap’s Dualism of Information Concept.” The topic is precisely the core issue before us: How is knowledge connected to physics? Kohler illuminates von Neumann’s views on this subject by contrasting them to those of Carnap. Rudolph Carnap was a distinguished philosopher, and member of the Vienna Circle. He was in some sense a dualist. He had studied one of the central problems of philosophy, namely the distinction between analytic statements and synthetic statements. (The former are true or false by virtue of a specified set of rules held in our minds, whereas the latter are true or false by virtue their concordance with physical or empirical facts.) His conclusions had led him to the idea that there are two different domains of truth, one pertaining to logic and mathematics and the other to physics and the natural sciences. This led to the claim that there are “Two Concepts of Probability,” one logical the other physical. That conclusion was in line with the fact that philosophers were then divided between two main schools as to whether probability should be understood in terms of abstract idealizations or physical sequences of outcomes of measurements. Carnap’s bifurcations implied a similar division between two different concepts of information, and of entropy. In 1952 Carnap was working at the Institute for Advanced Study in Princeton and about to publish a work on his dualistic theory of information, according to which epistemological concepts like information should be treated separately from physics. -
Secrets Jeremy Bernstein
INFERENCE / Vol. 6, No. 1 Secrets Jeremy Bernstein Restricted Data: The History of Nuclear Secrecy in the decided to found a rival weapons laboratory. Even if Teller United States had offered me a job, I doubt that I would have accepted.3 by Alex Wellerstein After obtaining my degree, I was offered a job that University of Chicago Press, 528 pp., $35.00. would keep me in Cambridge for at least another year. One year became two and at the end of my second year I was uclear weapons have been shrouded in secrecy accepted at the Institute for Advanced Study in Princeton. from the very beginning. After plutonium was It was around this time that the chairman of the physics discovered at the University of California in department at Harvard, Kenneth Bainbridge, came to me NDecember 1940, researchers led by Glenn Seaborg submit- with an offer. Bainbridge had been an important figure at ted a pair of letters to the Physical Review. The details of Los Alamos during the war. Robert Oppenheimer had put their discovery were withheld from publication until after him in charge of the site in New Mexico where the Trinity the war.1 Once the project to make a nuclear weapon got test had taken place.4 Bainbridge told me that the labora- underway, secrecy became a very serious matter indeed. tory was offering summer jobs to young PhDs and asked The story of these efforts and how they evolved after the if I was interested. I was very interested. Los Alamos had war is the subject of Alex Wellerstein’s Restricted Data: an almost mystical significance for me due to its history The History of Nuclear Secrecy in the United States. -
Manhattan Project National Historic Park National Park Service U.S
Manhattan Project National Historic Park National Park Service U.S. Department of the Interior Los Alamos, New Mexico MAIN GATE PASSES MUST BE PRESENTED TO GUARDS PASSES POST No. 1 SECRET Courtesy of the Atomic Heritage Foundation Manhattan Project National Historical Park Los Alamos, New Mexico JUNIOR RANGER BOOK Manhattan Project National Historical Park is a partnership park between the Department of Energy and the National Park Service. Three separate sites were located in Los Alamos, NM; Oakridge, TN; and Hanford, WA. Each site contributed significantly to scientific study and defense during World War II. Every location has different stories to share. Download Junior Ranger books from other sites to learn more! Hanford, WA Oakridge, TN Los Alamos, NM Junior Rangers are a very special group of people who promise to care for our National Parks so that future generations can enjoy and learn from them too! To become a Junior Ranger, you will need to read information about the Los Alamos Manhattan Project site, answer questions and complete activities. It is OK for parents to help! When you are finished, bring the completed booklet to the visitor center, or mail it in to the address below to receive your badge. Please tell us where to mail your badge: How many pages do I Name _______________________________________________ complete to earn my badge? 9th grade and up - All pages 4th-8th grade - 5 pages Address _____________________________________________ Under 4th grade - 3 pages City ________________________________________________ State __________________________ Zip _________________ For questions, contact the Los Alamos, NM Visitor Center at: 475 20th Street, Los Alamos, NM 87544 (505) 661-6277 Visit us online at www.nps.gov/mapr Check out our Facebook page: www.facebook.com/ManhattanProjectNPS Also find us at Twitter@MnhtnProjectNPS Rev. -
Monte Carlo Simulation in Statistics with a View to Recent Ideas
(sfi)2 Statistics for Innovation Monte Carlo simulation in statistics, with a view to recent ideas Arnoldo Frigessi [email protected] THE JOURNAL OF CHEMICAL PHYSICS VOLUME 21, NUMBER 6 JUNE, 1953 Equation of State Calculations by Fast Computing Machines NICHOLAS METROPOLIS, ARIANNA W. ROSENBLUTH, MARSHALL N. ROSENBLUTH, AND AUGUSTA H. TELLER, Los Alamos Scientific Laboratory, Los Alamos, New Mexico AND EDWARD TELLER, * Department of Physics, University of Chicago, Chicago, Illinois (Received March 6, 1953) A general method, suitable for fast computing machines, for investigating such properties as equations of state for substances consisting of interacting individual molecules is described. The method consists of a modified Monte Carlo integration over configuration space. Results for the two-dimensional rigid-sphere system have been obtained on the Los Alamos MANIAC and are presented here. These results are compared to the free volume equation of state and to a four-term virial coefficient expansion. The Metropolis algorithm from1953 has been cited as among the top 10 algorithms having the "greatest influence on the development and practice of science and engineering in the 20th century." MANIAC The MANIAC II 1952 Multiplication took a milli- second. (Metropolis choose the name MANIAC in the hope of stopping the rash of ”silly” acronyms for machine names.) Some MCMC milestones 1953 Metropolis Heat bath, dynamic Monte Carlo 1970 Hastings Political Analysis, 10:3 (2002) Society for Political Methodology 1984 Geman & Geman Gibbs -
NORRIS E. BRADBURY May 30, 1909–August 20, 1997
NATIONAL ACADEMY OF SCIENCES N O R R I S E . B R A D B URY 1909—1996 A Biographical Memoir by H A R O L D M. Ag NE W AN D RA E M E R E . S C HREIB ER Any opinions expressed in this memoir are those of the author(s) and do not necessarily reflect the views of the National Academy of Sciences. Biographical Memoir COPYRIGHT 1998 NATIONAL ACADEMIES PRESS WASHINGTON D.C. Courtesy of Los Alamos Scientific Laboratory NORRIS E. BRADBURY May 30, 1909–August 20, 1997 BY HAROLD M. AGNEW AND RAEMER E. SCHREIBER ORRIS E. (EDWIN) BRADBURY died August 20, 1997, at the Nage of eighty-eight. He succeeded J. Robert Oppen- heimer as director of the Los Alamos Laboratory in Octo- ber 1945 with the understanding that his appointment was an interim one, perhaps only for six months. Instead, he held the position of laboratory director for twenty-five years before retiring. Under his leadership, the laboratory recov- ered from the postwar doldrums and became internation- ally renowned for advanced research and development in a variety of fields. Much of the work was aimed at under- standing the use of nuclear energy, but important work was also done in related fields, such as computing, biosciences, and space technology. Norris Bradbury was born May 30, 1909, in Santa Bar- bara, California, one of four children of Edwin Pearly and Elvira (Clausen) Bradbury. He grew up in southern Califor- nia and attended Hollywood High School and then Chaffey Union High School in Ontario, California, where he gradu- ated at the age of sixteen. -
A Selected Bibliography of Publications By, and About, J
A Selected Bibliography of Publications by, and about, J. Robert Oppenheimer Nelson H. F. Beebe University of Utah Department of Mathematics, 110 LCB 155 S 1400 E RM 233 Salt Lake City, UT 84112-0090 USA Tel: +1 801 581 5254 FAX: +1 801 581 4148 E-mail: [email protected], [email protected], [email protected] (Internet) WWW URL: http://www.math.utah.edu/~beebe/ 17 March 2021 Version 1.47 Title word cross-reference $1 [Duf46]. $12.95 [Edg91]. $13.50 [Tho03]. $14.00 [Hug07]. $15.95 [Hen81]. $16.00 [RS06]. $16.95 [RS06]. $17.50 [Hen81]. $2.50 [Opp28g]. $20.00 [Hen81, Jor80]. $24.95 [Fra01]. $25.00 [Ger06]. $26.95 [Wol05]. $27.95 [Ger06]. $29.95 [Goo09]. $30.00 [Kev03, Kle07]. $32.50 [Edg91]. $35 [Wol05]. $35.00 [Bed06]. $37.50 [Hug09, Pol07, Dys13]. $39.50 [Edg91]. $39.95 [Bad95]. $8.95 [Edg91]. α [Opp27a, Rut27]. γ [LO34]. -particles [Opp27a]. -rays [Rut27]. -Teilchen [Opp27a]. 0-226-79845-3 [Guy07, Hug09]. 0-8014-8661-0 [Tho03]. 0-8047-1713-3 [Edg91]. 0-8047-1714-1 [Edg91]. 0-8047-1721-4 [Edg91]. 0-8047-1722-2 [Edg91]. 0-9672617-3-2 [Bro06, Hug07]. 1 [Opp57f]. 109 [Con05, Mur05, Nas07, Sap05a, Wol05, Kru07]. 112 [FW07]. 1 2 14.99/$25.00 [Ber04a]. 16 [GHK+96]. 1890-1960 [McG02]. 1911 [Meh75]. 1945 [GHK+96, Gow81, Haw61, Bad95, Gol95a, Hew66, She82, HBP94]. 1945-47 [Hew66]. 1950 [Ano50]. 1954 [Ano01b, GM54, SZC54]. 1960s [Sch08a]. 1963 [Kuh63]. 1967 [Bet67a, Bet97, Pun67, RB67]. 1976 [Sag79a, Sag79b]. 1981 [Ano81]. 20 [Goe88]. 2005 [Dre07]. 20th [Opp65a, Anoxx, Kai02]. -
ROBERT SERBER March 14, 1909–June 1, 1997
NATIONAL ACADEMY OF SCIENCES ROBE R T S E R BE R 1 9 0 9 — 1 9 9 7 A Biographical Memoir by ROBE R T P . Cr E A S E Any opinions expressed in this memoir are those of the author and do not necessarily reflect the views of the National Academy of Sciences. Biographical Memoir COPYRIGHT 2008 NATIONAL ACADEMY OF SCIENCES WASHINGTON, D.C. AIP Emilio Segre Visual Archives ROBERT SERBER March 14, 1909–June 1, 1997 BY ROBE RT P . CREASE OBERT SERBER (elected to the NAS in 1952) was one of Rthe leading theorists during the golden age of U.S. physics. He entered graduate school in 190 before such key discoveries as the neutron, positron, and deuteron and prior to the development of the principal tool of nuclear and high-energy physics, the particle accelerator. He retired from the Columbia University Physics Department (as its chairman) in 1978 after completion of the standard model of elementary particle physics, which comprises almost all known particles and forces in a single package, and which has proven hard to surpass. Shy and unostentatious, Serber did not mind being the detached spectator, and did not care when he was occasionally out of step with the mainstream, whether in politics or phys- ics. Nevertheless, others regularly counted on him for advice: he was an insider among insiders. He seemed to carry the entire field of physics in his head, and his particular strength was a synthetic ability. He could integrate all that was known of an area of physics and articulate it back to others clearly and consistently, explaining the connection of each part to the rest. -
9780521884082Ind CUNY1152/Bernstein 978 0 521
Cambridge University Press 978-0-521-12637-3 - Nuclear Weapons: What You Need to Know Jeremy Bernstein P1:KNPIndex 9780521884082More informatioindn CUNY1152/Bernstein 978 0 521 88408 2 August 1, 2007 13:2 INDEX Abelson, Philip isotope separation work, 31–32 discovery of neptunium, 100–102 isotope stability detection work, 30–31 finding of first transuranic, 96 Atkinson, Robert, 203–204 Aberdeen Proving Ground (Maryland), 147 Atlantic magazine, 7 active material, of atom bomb, 249–251 atomic bomb Alamogordo bombing range (Jornada del effect on Hiroshima, 4–5 Muerto), 152 German program, 26, 49 allotropism, 108 Urchin type initiator, 248–249 alpha particles, 18, 19 work of Chadwick, 24–25 artificial isotopes of, 43 atomic model, of Thomson, 16, 23 decay of, 193, 198–203 atomic quantum theory formulation, 18, and decay of plutonium, 144 23, 50 description of, 193, 194–195, 198–203 atomic weight, 93 emission by polonium, 133 Gamow’s barrier penetration theory, 203 Bainbridge, Kenneth, 123 and induction of gamma radiation, 26 barium, 50 quantum point of view of, 195 as fission fragment, 71 ALSOS missions, 229, 231, 238, 251 and Hahn’s uranium experiments, 46 Anderson, Carl, 196 isotopes of, 72 Anderson, Herbert, 74 Strassmann’s discovery of, 72, 280 anti-particle. See positrons (anti-particle) Becker, Herbert, 25 Ardenne, Manfred von, 228 Bell, John, 80 invention of form of calutron, 202 Ben-Gurion, David, 275–277 paper on plutonium-239, 202 Bernstein, Jeremy shipped to Soviet Union by Russia, 202, employment at Brookhaven, 177 260 employment -
Herman Heine Goldstine
Herman Heine Goldstine Born September 13, 1913, Chicago, Ill.; Army representative to the ENIAC Project, who later worked with John von Neumann on the logical design of the JAS computer which became the prototype for many early computers-ILLIAC, JOHNNIAC, MANIAC author of The Computer from Pascal to von Neumann, one of the earliest textbooks on the history of computing. Education: BS, mathematics, University of Chicago, 1933; MS, mathematics, University of Chicago, 1934; PhD, mathematics, University of Chicago, 1936. Professional Experience: University of Chicago: research assistant, 1936-1937, instructor, 1937-1939; assistant professor, University of Michigan, 1939-1941; US Army, Ballistic Research Laboratory, Aberdeen, Md., 1941-1946; Institute for Advanced Study, Princeton University, 1946-1957; IBM: director, Mathematics Sciences Department, 1958-1965, IBM fellow, 1969. Honors and Awards: IEEE Computer Society Pioneer Award, 1980; National Medal of Science, 1985; member, Information Processing Hall of Fame, Infornart, Dallas, Texas, 1985. Herman H. Goldstine began his scientific career as a mathematician and had a life-long interest in the interaction of mathematical ideas and technology. He received his PhD in mathematics from the University of Chicago in 1936 and was an assistant professor at the University of Michigan when he entered the Army in 1941. After participating in the development of the first electronic computer (ENIAC), he left the Army in 1945, and from 1946 to 1957 he was a member of the Institute for Advanced Study (IAS), where he collaborated with John von Neumann in a series of scientific papers on subjects related to their work on the Institute computer. In 1958 he joined IBM Corporation as a member of the research planning staff. -
Appendix E Nobel Prizes in Nuclear Science
Nuclear Science—A Guide to the Nuclear Science Wall Chart ©2018 Contemporary Physics Education Project (CPEP) Appendix E Nobel Prizes in Nuclear Science Many Nobel Prizes have been awarded for nuclear research and instrumentation. The field has spun off: particle physics, nuclear astrophysics, nuclear power reactors, nuclear medicine, and nuclear weapons. Understanding how the nucleus works and applying that knowledge to technology has been one of the most significant accomplishments of twentieth century scientific research. Each prize was awarded for physics unless otherwise noted. Name(s) Discovery Year Henri Becquerel, Pierre Discovered spontaneous radioactivity 1903 Curie, and Marie Curie Ernest Rutherford Work on the disintegration of the elements and 1908 chemistry of radioactive elements (chem) Marie Curie Discovery of radium and polonium 1911 (chem) Frederick Soddy Work on chemistry of radioactive substances 1921 including the origin and nature of radioactive (chem) isotopes Francis Aston Discovery of isotopes in many non-radioactive 1922 elements, also enunciated the whole-number rule of (chem) atomic masses Charles Wilson Development of the cloud chamber for detecting 1927 charged particles Harold Urey Discovery of heavy hydrogen (deuterium) 1934 (chem) Frederic Joliot and Synthesis of several new radioactive elements 1935 Irene Joliot-Curie (chem) James Chadwick Discovery of the neutron 1935 Carl David Anderson Discovery of the positron 1936 Enrico Fermi New radioactive elements produced by neutron 1938 irradiation Ernest Lawrence