- Hardcover
- Used
Seller: Ground Zero Books, Ltd., Silver Spring, MD, U.S.A.Ground Zero Books, Ltd.
AbeBooks seller since August 14, 1998
Condition: Used - Very good
£ 21.41
Quantity: 1 available
Add to basketItem description from seller
vi, [2], 254, [2] pages. Illustrations. Index. Pencil erasure residue on fep. Previous owner's mailing label on fep. DJ has some wear and soiling. Atomic physics is the field of physics that studies atoms as an isolated system of electrons and an atomic nucleus. It is primarily concerned with the arrangement of electrons around the nucleus and the processes by which these arrangements change. This comprises ions, neutral atoms and, unless otherwise stated, it can be assumed that the term atom includes ions. The term atomic physics can be associated with nuclear power and nuclear weapons, due to the synonymous use of atomic and nuclear in standard English. Physicists distinguish between atomic physics - which deals with the atom as a system consisting of a nucleus and electrons - and nuclear physics, which considers atomic nuclei alone. As with many scientific fields, strict delineation can be highly contrived and atomic physics is often considered in the wider context of atomic, molecular, and optical physics. Physics research groups are usually so classified. Otto Robert Frisch FRS (1 October 1904 - 22 September 1979) was an Austrian-British physicist. With Lise Meitner he advanced the first theoretical explanation of nuclear fission (coining the term) and first experimentally detected the fission by-products. Later, with his collaborator Rudolf Peierls he designed the first theoretical mechanism for the detonation of an atomic bomb in 1940. In 1944 at Los Alamos, one of Frisch's tasks as the leader of the Critical Assemblies group was to accurately determine the exact amount of enriched uranium which would be required to create the critical mass, the mass of uranium which would sustain a nuclear chain reaction. He did this by stacking several dozen 3 cm bars of enriched uranium hydride at a time and measuring rising neutron activity as the critical mass was approached. The hydrogen in the metal bars increased the time that the reaction required to accelerate. One day Frisch almost caused a runaway reaction by leaning over the stack, which he termed the "Lady Godiva assembly". His body reflected neutrons back into the stack. Out of the corner of his eye he saw that the red lamps that flickered intermittently when neutrons were being emitted, were 'glowing continuously'. Realizing what was happening, Frisch quickly scattered the bars with his hand. Later he calculated that the radiation dose was "quite harmless" but that if he "had hesitated for another two seconds before removing the material . the dose would have been fatal". "In two seconds he received, by the generous standards of the time, a full day's permissible dose of neutron radiation." In this way his experiments determined the exact masses of uranium required to fire the Little Boy bomb over Hiroshima. He also designed the "dragon's tail" or "guillotine" experiment in which a uranium slug was dropped through a hole in larger fixed mass of uranium, reaching just above critical mass (0.1%) for a fraction of a second. At the meeting to approve the experiment, Richard Feynman, commenting on the transient danger involved, said it was "just like tickling the tail of a sleeping dragon." In the period of about 3 milliseconds, the temperature rose at a rate of 2000°C per sec and over 1015 excess neutrons were emitted. In 1946 he returned to England to take up the post of head of the nuclear physics division of the Atomic Energy Research Establishment at Harwell. …
Seller Inventory # 73822
Bibliographic details
- Title
- Atomic Physics Today
- Author
- Frisch, Otto R.
- Publisher
- Basic Books, Inc, New York
- Publication year
- 1961
- Condition
- Very good
- Dust jacket
- Good
- Binding
- Hardcover
- Edition
- Second printing [stated].
Ground Zero Books, Ltd.
Silver Spring, MD, U.S.A.
AbeBooks seller since August 14, 1998
Shipping rates within U.S.A.
| Item | 5 to 20 business days | 3 to 6 business days |
|---|---|---|
| First item | £ 3.78 | £ 5.67 |
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Store description
Founded and operated by trained historians, Ground Zero Books, Ltd., serves the book collector, the scholar, and institutions. We focus on the individual, and pride ourselves on our personal service. Please contact us with your wants, as we have many books not yet listed in our database.
Specialty
Military History, Nuclear, American Revolution, Military Medicine, Vietnam, World War II, British Empire, World War I, Unit Histories, Civil WarSeller's business information
Ground Zero Books, Ltd.
9033 Georgia Avenue
Silver Spring, MD U.S.A. 20910-2254
Terms of sale
Books are subject to prior sale. Please ask us to hold a book for you before you
mail your check. Books are returnable within 7 days, if not satisfactory. MD
residents add 6% state sales tax.
The mailing address for Ground Zero Books, Ltd. (a subchapter-S corporation) is
P.O. Box 8369, Silver Spring, MD 20907-8369. You can reach us by phone at 301-
585-1471, by fax at 301-920-0253, or by e-mail at gzbooksltd@aol.com. Ground Zero
Books, Ltd., is owned & operated by R. Alan Lewis & Lynne Haims.
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