Author: Otto Robert FrischPublisher:
ISBN:
Category : Hahn, Otto, 1879-
Languages : en
Pages :
Book Description
Trends in atomic physics; essays dedicated to Lise Meitner, Otto Hahn
Author: Otto Robert FrischPublisher:
ISBN:
Category : Hahn, Otto, 1879-
Languages : en
Pages :
Book Description
TRENDS IN ATOMIC PHYSICS : ESSAYS DEDICATED TO LISE MEITNER, OTTO HAHN, MAX VON LAUE ON THE OCCASION OF THEIR 80TH BIRTHDAY.
Author: Otto Robert FrischTrends in Atomic Physics
Author: Otto Robert FrischOtto Hahn and the Rise of Nuclear Physics
Author: W.R. SheaPublisher: Springer Science & Business Media
ISBN: 9400971338
Category : History
Languages : en
Pages : 274
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.
Otto Hahn
Author: Klaus HoffmannPublisher: Springer Science & Business Media
ISBN: 9780387950570
Category : History
Languages : en
Pages : 292
Book Description
Otto Hahn received a Nobel Prize in 1944 for his work in Germany on atomic fission but ironically, after WWII he became an outspoken opponent of nuclear proliferation and an advocate of social responsibility among scientists. This invaluable account of the life and times of Otto Hahn discusses his contributions as one of the fathers of the Nuclear Age and reflects on his view of scientific and social responsibility. The book concludes with Hahn's ideas, which serve as a foundation for responsible and moral actions by scientists.
Lise Meitner
Author: Ruth Lewin SimePublisher: Univ of California Press
ISBN: 0520089065
Category : Women physicists
Languages : en
Pages : 564
Book Description
She refused to participate in the Allied atomic bomb project and was greatly concerned about the development of nuclear weapons after the war.
Otto Hahn and the Rise of Nuclear Physics
Author: W. R. SheaPublisher: Springer Science & Business Media
ISBN: 9789027715845
Category : Biography & Autobiography
Languages : en
Pages : 274
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.
Madame Wu Chien-shiung: The First Lady Of Physics Research
Author: Tsai-chien ChiangPublisher: World Scientific
ISBN: 9814579130
Category : Science
Languages : en
Pages : 301
Book Description
Narrating the well-lived life of the “Chinese Madame Curie” — a recipient of the first Wolf Prize in Physics (1978), the first woman to receive an honorary doctorate from Princeton University, as well as the first female president of the American Physical Society — this book provides a comprehensive and honest account of the life of Dr Wu Chien-Shiung, an outstanding and leading experimental physicist of the 20th century.
Lawrence and His Laboratory
Author: J. L. HeilbronPublisher: Univ of California Press
ISBN: 0520341082
Category : Science
Languages : en
Pages : 660
Book Description
The Radiation Laboratory in Berkeley, California, was the birthplace of particle accelerators, radioisotopes, and modern big science. This first volume of its history is a saga of physics and finance in the Great Depression, when a new kind of science was born. Here we learn how Ernest Lawrence used local and national technological, economic, and manpower resources to build the cyclotron, which enabled scientists to produce high-voltage particles without high voltages. The cyclotron brought Lawrence forcibly and permanently to the attention of leaders of international physics in Brussels at the Solvay Congress of 1933. Ever since, the Rad Lab has played a prominent part on the world stage. The book tells of the birth of nuclear chemistry and nuclear medicine in the Laboratory, the discoveries of new isotopes and the transuranic elements, the construction of the ultimate cyclotron, Lawrence's Nobel Prize, and the energy, enthusiasm, and enterprise of Laboratory staff. Two more volumes are planned to carry the story through the Second World War, the establishment of the system of national laboratories, and the loss of Berkeley's dominance of high-energy physics.
The Physical Tourist
Author: John S. RigdenPublisher: Springer Science & Business Media
ISBN: 3764389338
Category : Science
Languages : en
Pages : 252
Book Description
Travelers differ.At one extreme are random travelers who see what they accidentally bump into.At the other extreme are the lock-step travelers who follow a banner (or a red umbrella) and look when and where a voice tells them to look. Between these extremes are the guide-book travelers who identify the whereabouts of those sites that interest them and they plan their sightseeing accordingly. If a traveler’s interests are captivated by the arts, guide books can be very helpful. For example, the table of contents of a current guide book for travelers going to G- many has sections on architecture, art, literature, music and cinema.The index gives page references for famous writers, musicians, and artists.Yet, while Germany was a dominate force in physical science during the 19th and into the 20th centuries and while the names and photos of prominent German physical scientists who worked in this period are sprinkled through the pages of textbooks, only one scientist is m- tioned by name:Albert Einstein is identified as the most famous citizen of Ulm.