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Author: W.R. Shea
Publisher: Springer Science & Business Media
ISBN: 9400971338
Category : History
Languages : en
Pages : 274
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Book Description
and less as the emanation unden\'ent radioactive decay, and it became motion less after about 30 seconds. Since this process was occurring very rapidly, Hahn and Sackur marked the position of the pointer on a scale with pencil marks. As a timing device they used a metronome that beat out intervals of approximately 1. 3 seconds. This simple method enabled them to determine that the half-life of the emanations of actinium and emanium were the same. Although Giesel's measurements had been more precise than Debierne's, the name of actinium was retained since Debierne had made the discovery first. Hahn now returned to his sample of barium chloride. He soon conjectured that the radium-enriched preparations must harbor another radioactive sub stance. The liquids resulting from fractional crystallization, which were sup posed to contain radium only, produced two kinds of emanation. One was the long-lived emanation of radium, the other had a short life similar to the emanation produced by thorium. Hahn tried to separate this substance by adding some iron to the solutions that should have been free of radium, but to no avail. Later the reason for his failure became apparent. The element that emitted the thorium emanation was constantly replenished by the ele ment believed to be radium. Hahn succeeded in enriching a preparation until it was more than 100,000 times as intensive in its radiation as the same quantity of thorium.
Author: W.R. Shea
Publisher: Springer Science & Business Media
ISBN: 9400971338
Category : History
Languages : en
Pages : 274
Get Book Here
Book Description
and less as the emanation unden\'ent radioactive decay, and it became motion less after about 30 seconds. Since this process was occurring very rapidly, Hahn and Sackur marked the position of the pointer on a scale with pencil marks. As a timing device they used a metronome that beat out intervals of approximately 1. 3 seconds. This simple method enabled them to determine that the half-life of the emanations of actinium and emanium were the same. Although Giesel's measurements had been more precise than Debierne's, the name of actinium was retained since Debierne had made the discovery first. Hahn now returned to his sample of barium chloride. He soon conjectured that the radium-enriched preparations must harbor another radioactive sub stance. The liquids resulting from fractional crystallization, which were sup posed to contain radium only, produced two kinds of emanation. One was the long-lived emanation of radium, the other had a short life similar to the emanation produced by thorium. Hahn tried to separate this substance by adding some iron to the solutions that should have been free of radium, but to no avail. Later the reason for his failure became apparent. The element that emitted the thorium emanation was constantly replenished by the ele ment believed to be radium. Hahn succeeded in enriching a preparation until it was more than 100,000 times as intensive in its radiation as the same quantity of thorium.
Author: Ruth Lewin Sime
Publisher: Univ of California Press
ISBN: 9780520208605
Category : Biography & Autobiography
Languages : en
Pages : 564
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Book Description
Traces the life of Jewish physicist Lise Meitner, who had to flee Nazi Germany, codiscovered nuclear fission with Otto Hahn and Fritz Strassmann, but was denied recognition when the work received a Nobel Prize.
Author: W R Shea
Publisher:
ISBN: 9789400971349
Category :
Languages : en
Pages : 268
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Book Description
Author: Richard Rhodes
Publisher: Simon and Schuster
ISBN: 1439126224
Category : History
Languages : en
Pages : 890
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Book Description
**Winner of the Pulitzer Prize, the National Book Award, and the National Book Critics Circle Award** The definitive history of nuclear weapons—from the turn-of-the-century discovery of nuclear energy to J. Robert Oppenheimer and the Manhattan Project—this epic work details the science, the people, and the sociopolitical realities that led to the development of the atomic bomb. This sweeping account begins in the 19th century, with the discovery of nuclear fission, and continues to World War Two and the Americans’ race to beat Hitler’s Nazis. That competition launched the Manhattan Project and the nearly overnight construction of a vast military-industrial complex that culminated in the fateful dropping of the first bombs on Hiroshima and Nagasaki. Reading like a character-driven suspense novel, the book introduces the players in this saga of physics, politics, and human psychology—from FDR and Einstein to the visionary scientists who pioneered quantum theory and the application of thermonuclear fission, including Planck, Szilard, Bohr, Oppenheimer, Fermi, Teller, Meitner, von Neumann, and Lawrence. From nuclear power’s earliest foreshadowing in the work of H.G. Wells to the bright glare of Trinity at Alamogordo and the arms race of the Cold War, this dread invention forever changed the course of human history, and The Making of The Atomic Bomb provides a panoramic backdrop for that story. Richard Rhodes’s ability to craft compelling biographical portraits is matched only by his rigorous scholarship. Told in rich human, political, and scientific detail that any reader can follow, The Making of the Atomic Bomb is a thought-provoking and masterful work.
Author: Edward James Burge
Publisher: Oxford University Press, USA
ISBN:
Category : Literary Criticism
Languages : en
Pages : 232
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Book Description
This account reviews current knowledge about the physics of nuclear structure, including the relevance of recent discoveries to cosmology. The latest advances in particle accelerator and detector technology are noted, and the description of nuclear reactions is expanded from the first edition. Mathematical material is reserved for special appendices in order to facilitate a rapid grasp of the material. This book is an ideal text for introductory courses in nuclear physics.
Author: Francis George Gosling
Publisher: DIANE Publishing
ISBN: 0788178806
Category : Atomic bomb
Languages : en
Pages : 75
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Book Description
A history of the origins and development of the American atomic bomb program during WWII. Begins with the scientific developments of the pre-war years. Details the role of the U.S. government in conducting a secret, nationwide enterprise that took science from the laboratory and into combat with an entirely new type of weapon. Concludes with a discussion of the immediate postwar period, the debate over the Atomic Energy Act of 1946, and the founding of the Atomic Energy Commission. Chapters: the Einstein letter; physics background, 1919-1939; early government support; the atomic bomb and American strategy; and the Manhattan district in peacetime. Illustrated.
Author: Jeannine Atkins
Publisher: Simon and Schuster
ISBN: 1665902507
Category : Juvenile Fiction
Languages : en
Pages : 288
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Book Description
A biographical novel in verse about Lise Meitner, an Austrian Jew and physics professor in Nazi Germany who escaped to Sweden and whose work led to the discovery of nuclear fission. Includes author's note and timeline.
Author: Gino Segrè
Publisher: Macmillan + ORM
ISBN: 1627790063
Category : Biography & Autobiography
Languages : en
Pages : 387
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Book Description
One of Booklist’s Top 10 Science Books of the Year: “A superb biography . . . A definite study of Fermi’s life and work.” —The Wall Street Journal A Bloomberg Best Book of the Year A Finalist for Physics World’s Book of the Year A New York Times Book Review Editor’s Choice Nobel Prize winner Enrico Fermi is unquestionably among the world’s greatest physicists, the most famous Italian scientist since Galileo. Called “the Pope” by his peers, he was regarded as infallible in his instincts and research. His discoveries changed our world; they led to weapons of mass destruction and, conversely, to life-saving medical interventions. This unassuming man struggled with issues relevant today, such as the threat of nuclear annihilation and the relationship of science to politics. Fleeing fascism and anti-Semitism, Fermi became a leading figure in America’s most secret project: building the atomic bomb. The last physicist who mastered all branches of the discipline, Fermi was a rare mixture of theorist and experimentalist. His rich legacy encompasses key advances in fields as diverse as cosmic rays, nuclear technology, and early computers. The Pope of Physics by Gino Segré and Bettina Hoerlin is “an engaging portrait of a man with boundless curiosity who delighted in his work” and an “entertaining and accessible biography of a scientist who deserves to be better understood” (Publishers Weekly, starred review). “Intimate, often charming stories of the famed physicist’s personal life . . . a book that’s both intelligent and extremely engaging.” —The Washington Post
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309179289
Category : Science
Languages : en
Pages : 152
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Book Description
Over ten years ago, U.S. nuclear scientists proposed construction of a new rare isotope accelerator in the United States, which would enable experiments to elucidate the important questions in nuclear physics. To help assess this proposal, DOE and NSF asked the NRC to define the science agenda for a next-generation U.S. Facility for Rare Isotope Beams (FRIB). As the study began, DOE announced a substantial reduction in the scope of this facility and put off its initial operation date by several years. The study focused on an evaluation of the science that could be accomplished on a facility reduced in scope. This report provides a discussion of the key science drivers for a FRIB, an assessment of existing domestic and international rare isotope beams, an assessment of the current U.S. position about the FRIB, and a set of findings and conclusions about the scientific and policy context for such a facility.
Author: Eric Scerri
Publisher: OUP USA
ISBN: 0195391314
Category : Science
Languages : en
Pages : 305
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Book Description
In A Tale of Seven Elements, Eric Scerri presents the fascinating history of those seven elements discovered to be mysteriously "missing" from the periodic table in 1913.
