ATOMIC MASS

the mass of a single atom, usually expressed in atomic mass units (amu). Most of the mass of an atom is concentrated in the protons and neutrons contained in the nucleus. Each proton or neutron weighs about 1 amu, and thus the atomic mass is always very close to the mass number (total number of protons and neutrons in the nucleus). Atoms of an isotope of an element all have the same atomic mass. Atomic masses are usually determined by mass spectrography (see mass spectrograph). They have been determined with great relative accuracy, but their absolute value is less certain.

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The Columbia Encyclopedia, Sixth Edition Copyright© 2004, Columbia University Press. Licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

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Questia Books and Articles on: Atomic Mass
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books on: Atomic Mass  - 3567 results

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1.
Hiroshima and Nagasaki: The Physical, Medical, and Social Effects of the Atomic Bombings
Book by Eisei Ishikawa, David L. Swain, Committee for the Compilation of Materials on Damage Caused by the Atomic Bombs in Hiroshima and Nagasaki; Basic Books, 1981
Subjects: Atomic Bomb--Blast Effect, Atomic Bomb--Physiological Effect, Hiroshima-Shi (Japan)--Bombardment, 1945, Nagasaki-Shi (Japan)--Bombardment, 1945, Nuclear Warfare, Radiation Injuries
...Socio-psychological study pertaining to the atomic bomb and atomic energy," I, Shinrigaku Kenky u Japanese Journal...Teragami, M. 1974. "Investigation of a regular mass examination of atomic bomb survivors," Journal of the Hiroshima Medical...
2.
The Way to Ground Zero: The Atomic Bomb in American Science Fiction
Book by Martha A. Bartter; Greenwood Press, 1988
Subjects: Atomic Bomb In Literature, Nuclear Warfare In Literature, Science Fiction, American--History And Criticism, War Stories, American--History And Criticism, World War, 1939-1945--Literature And The War
...to develop, complete with atomic bombs. Like many other writers...use science fiction -- and atomic demonstrations -- to retrain the world. Mass education by means of the motion...effects and unstoppable power of atomic explosives and radioactive...
3.
The Decision to Drop the Atomic Bomb
Book by Dennis D. Wainstock; Praeger, 1996
Subjects: Atomic Bomb, Truman, Harry S.--1884-1972, United States--Foreign Relations--1945-1953, World War, 1939-1945--Japan, World War, 1939-1945--United States
...decision as to whether the atomic bomb was just another piece...discussion as to whether the atomic bomb should be used or not." 95 Truman hoped the atomic bomb would make an invasion...were generally inured to the mass killing of civilians...
4.
The Atomic Bomb Suppressed: American Censorship in Occupied Japan
Book by Monica Braw; M. E. Sharpe, 1991
Subjects: Atomic Bomb--Japan, Freedom Of The Press--Japan, Japan--History--Allied Occupation, 1945-1952, Press--Japan
Atomic energy is simply one of many...time of the construction of the atomic bomb testing ground at the Eniwetok...bomb performances, critical mass, details of manufacture, results...to the long-range effect of atomic bombs. The reason given was...
5.
Prompt and Utter Destruction: Truman and the Use of Atomic Bombs against Japan
Book by J. Samuel Walker; University of North Carolina Press, 1997
Subjects: Atomic Bomb, Truman, Harry S.--1884-1972, United States--Foreign Relations--1945-1953, World War, 1939-1945--Japan, World War, 1939-1945--United States
...a look at the effects of the atomic bomb, even the battle-hardened...spectacular sight, a bubbling mass of purple-gray smoke." 1...the destructive energy of the atomic bomb to flow evenly outward...strong enough to weather the atomic blast. The permanent population...
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journal articles on: Atomic Mass  - 1609 results

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1.
Atomic Warfare and the Nuclear Family: Domestic Resistance in Hollywood Films about the A-Bomb
Journal article by Michael Pressler; Film Criticism, Vol. 27, 2003
Subjects: Atomic bomb--Portrayals, depictions, etc., Atomic bomb--Usage, Motion pictures--Criticism, interpretation, etc., Nuclear warfare--Moral and ethical aspects, Nuclear warfare--Portrayals, depictions, etc.
...for uncovering artifacts of atomic paranoia in cold-war cinema...the fifties evidence of "a mass trauma ... over the use of...both 1957)--all victims of atomic radiation--"bear witness...were equivocal in their view of atomic energy and the role of the military...
2.
Prompt and Utter Destruction: Truman and the Use of Atomic Bombs against Japan
Journal article by Conrad C. Crane; The Historian, Vol. 61, 1999
Subjects: Books--Reviews, Prompt and Utter Destruction: Truman and the Use of Atomic Bombs Against Japan (Book)--Reviews
...Destruction: Truman and the Use of Atomic Bombs Against Japan by Conrad...Destruction: Truman and the Use of Atomic Bombs Against Japan. By J...on the decision to drop the atomic bomb. The attention he garnered...and thoughtful approach to the mass of documentary evidence has...
3.
Assessing the Nuclear Threat; Richard L. Russell Reviews the Atomic Bazaar: The Rise of the Nuclear Poor
Journal article by Richard L. Russell; Harvard International Review, Vol. 29, 2008
Subjects: Nuclear weapons--Political aspects, Pakistan--Political aspects, The Atomic Bazaar: The Rise of the Nuclear Poor (Book)
...Threat; Richard L. Russell Reviews the Atomic Bazaar: The Rise of the Nuclear Poor...writing engaging analysis of weapons of mass destruction proliferation while offering...University and Georgetown University. The Atomic Bazaar: The Rise of the Nuclear Poor is...
4.
The Atomic Bomb and the Citizens of Nagasaki
Journal article by Sadao Kamata, Stephen Salaff; Bulletin of Concerned Asian Scholars, Vol. 14, 1982
Subjects: Asia
...fighting men were saved by the atomic instrument. The chronology of atomic diplomacy shows that the idea of the demonstrative mass destruction of Japanese cities took...Air Force ordnance specialists and atomic scientists, guided by official...
5.
Atomic Kids: Duck and Cover and Atomic Alert Teach American Children How to Survive Atomic Attack
Journal article by Bo Jacobs; Film & History, Vol. 40, 2010
Subjects: Cold War, Learning, Society, Weapons, World War II
...States government began the mass distribution of civil defense...nuclear war. Survival Under Atomic Attack, the first civil defense...destruction of American cities fueled atomic fears across the United States...in the 1 982 documentary The Atomic Cafe. But in its original release...
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magazine articles on: Atomic Mass  - 1697 results

       More magazine Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
One, Two, Three ... No More WMD: What Will It Take to Stop the Spread of Weapons of Mass Destruction?
Magazine article; Foreign Policy, March 2004
Subjects: International Atomic Energy Agency, Weapons of mass destruction--Analysis
...What Will It Take to Stop the Spread of Weapons of Mass Destruction? IF WEAPONS OF MASS DESTRUCTION (WMD) werent topic A at Davos, they...ElBaradei, director general of the International Atomic Energy Agency, made headlines with his assertion...
2.
Life after the Atomic Bomb
Magazine article by Julia Chaitin, Aiko Sawada, Dan Bar-On; USA Today (Society for the Advancement of Education), Vol. 135, March 2007
Subjects: Atomic bomb--Health aspects, Atomic bombs--Health aspects, Civilian casualties--Research, Hiroshima Bombardment, 1945--Health aspects, Nagasaki Bombardment, 1945--Health aspects, Post-traumatic stress disorder--Research
Life after the Atomic Bomb. by Julia Chaitin...1945, THE U.S. DROPPED atomic bombs--first on Hiroshima...history that weapons of such mass destruction were used against...from those bombings. The atomic explosions inflicted severe...
3.
Iran and "The Bomb": While Iran Does Appear to Have the Uranium-Enrichment Capability Needed to Make an Atomic Bomb, That Is Not the Same as Having a Bomb and Being Able to Deliver It
Magazine article by Ed Hiserodt; The New American, Vol. 22, October 16, 2006
Subjects: Atomic bomb--Political aspects, Atomic bomb--Production processes, Atomic bombs--Political aspects, Atomic bombs--Production processes, Iran--Energy policy, Nuclear arms control--International aspects, Uranium enrichment--Management
...Richard Rhodes The Making of the Atomic Bomb. While most of the heavy...reaction automatically stops. Atomic bombs reverse these principles...bomb-grade uranium, the atomic explosion will occur only if...Two or more sub-critical masses were fired together like opposing...projectiles to obtain the critical mass. It was deployed without ever...
4.
Converting a Crisis into an Opportunity: Thomas Land Reports from the United Nations International Atomic Energy Headquarters in Vienna on Moves to Establish the Middle East Region as a Nuclear Weapons-Free Zone
Magazine article by Thomas Land; The Middle East, January 2006
Subjects: ElBaradei, Mohamed, International Atomic Energy Agency, Nuclear weapons
...United Nations International Atomic Energy Headquarters in Vienna...United Nations International Atomic Energy Agency (IAEA), has...illegal development of weapons of mass destruction. El Baradeis portion...Middle East without weapons of mass destruction as a prerequisite...
5.
The Atomic Curtain
Magazine article by Robert Jay Lifton, Greg Mitchell; The Nation, Vol. 260, May 15, 1995
Subjects: Atomic bomb--Safety and security measures, Atomic bombs--Safety and security measures, Nuclear warfare--Political aspects, Nuclear weapons--History
The Atomic Curtain. by Robert Jay Lifton...The facilities where the atomic bomb was built--the entire...privy to the secret of the atomic bomb was to share in a privileged...decision to create a weapon of mass destruction and hide the nature...
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newspaper articles on: Atomic Mass  - 745 results

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1.
The Atomic Timebomb; Mass Destruction: Rutherford's Work Led to Nuclear Weaponry. Inset: Vanessa Santos-Leitao and Hugh Wagner, Who Both Died of Cancer
Newspaper article; The Daily Mail (London, England), September 24, 2008
The Atomic Timebomb; Mass Destruction: Rutherfords Work Led to Nuclear Weaponry. Inset: Vanessa...to split the atom - paving the way for the Manhattan Project and the atomic bomb * Rutherford once declared: In science there is only physics...
2.
The Atomic Timebomb; Mass Destruction: Rutherford's Work Led to Nuclear Weaponry. Inset: Vanessa Santos-Leitao and Hugh Wagner, Who Both Died of Cancer
Newspaper article; The Daily Mail (London, England), September 24, 2008
Subjects: Cancer
The Atomic Timebomb; Mass Destruction: Rutherfords Work Led to Nuclear Weaponry. Inset: Vanessa Santos-Leitao and Hugh Wagner, Who Both Died of Cancer...
3.
Smitten Kitten; Ex-Atomic Kitten LIZ McLARNON Admits She Loves to Be in Love, Which May Explain Why She's Reportedly Dated Enough Footballers to Make Up a Premier League Team and Is Now in the Arms of Another. REBECCA HARDY Hears How She Was So Bullied at School She Became a Bundle of Neuroses
Newspaper article; The Daily Mail (London, England), September 2, 2006
Subjects: Soccer players
Smitten Kitten; Ex-Atomic Kitten LIZ McLARNON Admits She...footballer Lee Trundle, and former Atomic Kitten Liz cant stop gushing...doesnt mind admitting it. Shes a mass of long curly hair and neuroses...just turning 17 when she joined Atomic Kitten, so she has never known...
4.
`Atomic Cinematographers' Win Salute from Hollywood: Documented Nuclear Testing for U.S. Military
Newspaper article by K.L. Billingsley; The Washington Times, October 24, 1997
`Atomic cinematographers win salute...dream factories churning out mass entertainment, they made thousands...first time acknowledged the "atomic cinematographers," who, from...were documented on film. The atomic cinematographers worked at Lookout...
5.
I Buried Hitler's Bomb; EXCLUSIVE SCIENTIST HID ATOMIC SECRETS TO FOIL NAZIS
Newspaper article; Sunday Mail (Glasgow, Scotland), December 16, 2007
...Bomb; EXCLUSIVE SCIENTIST HID ATOMIC SECRETS TO FOIL NAZIS. Byline...desperate battle to develop the atomic bomb before the Allies. More...create the ultimate weapon of mass destruction. But the German...It was vital to Hitlers atomic plans. But Erwin revealed...
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encyclopedia articles on: Atomic Mass  - 62 results

       More encyclopedia Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
Atomic Mass
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...proton or neutron weighs about 1 amu, and thus the atomic mass is always very close to the mass number (total...Atoms of an isotope of an element all have the same atomic mass. Atomic masses are usually determined by mass spectrography (see...
2.
Atomic Mass Unit
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
ATOMIC MASS UNIT or amu, in chemistry and physics, unit defined as exactly 1 / 12 the mass of an atom of carbon-12, the isotope of carbon with six protons and six neutrons in its nucleus. One amu is equal to approximately 1.66 O 10 24 grams...
3.
Atomic Weight
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
ATOMIC WEIGHT mean (weighted average) of the masses of all the naturally occurring...chemical element , as contrasted with atomic mass , which is the mass of any individual isotope. Although the first atomic weights were calculated at the...
4.
Atomic Number
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...number make up a chemical element . Atomic numbers were first assigned to...periodic table in the order of their atomic numbers. Mendeleevs periodic law was originally based on atomic weights . See mass number...
5.
Atomic Bomb
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...chain reaction . If the mass of the fissionable material exceeds the critical mass (a few pounds), the...release of energy. An atomic bomb is detonated by...explosive) two subcritical masses of fissionable material, the combined mass exceeding the critical mass. An atomic bomb explosion produces...
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