Atom Bomb


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atomic bomb

, atom bomb
a type of bomb in which the energy is provided by nuclear fission. Uranium-235 and plutonium-239 are the isotopes most commonly used in atomic bombs

Atom Bomb

 

a bomb with a nuclear charge dropped from aircraft. The first atom bombs were made in the USA at the end of World War II. The explosion of an atom bomb releases a tremendous amount of nuclear energy. In July 1945 the Americans tested the atom bomb and then dropped two bombs with the equivalent of 20,000 tons of TNT on the Japanese cities of Hiroshima (Aug. 6) and Nagasaki (Aug. 9, 1945). The explosion of the atom bombs caused great destruction in these cities and enormous casualties among the peaceful civilian population. More than 140,000 people were killed or wounded in Hiroshima and about 75,000 in Nagasaki. Subsequently several hundred thousand people died as a result of the aftereffects of the atomic bombardment. The use of the atom bombs was not caused by any military necessity. The American ruling circles gambled on a temporary US monopoly in nuclear weaponry and tried to use it to intimidate freedom-loving peoples. But the atomic “secrets” were discovered as early as 1947 by Soviet scientists headed by Academician I. V. Kurchatov; in August 1949 the USSR made an experimental explosion of an atomic device, which led to the end of any possibility of atomic blackmail. The term “atom bomb” is now rarely used.

References in periodicals archive ?
A more basic question about the morality of the use of atom bombs is whether war is ever reasonable or desirable.
An atom bomb would give them the most value for money.
Well, according to the authors of The Atom Bomb and the Origins of the Cold War, the real story of the atom bomb is a whole lot more complicated--and fascinating.
He was a telegraphist on HMS Messina at Christmas Island, which was chosen as the base for Operation Grapple - the race to build Britain's first atom bomb - between 1956 and 1958.
Why brilliant physicists went ahead with work on the atom bomb during WW II even though they knew the horrible consequences, and what happened when Cold War politics entered Oppenheimer's life--these are the themes of this biography.
Only after it created the atom bomb did officials tell us there were some dangers with mining uranium.
The age was the postwar period, filled with anxiety, shocked by the atom bomb, changed by machines, immersed in Freudian theory and psychoanalysis, swinging with improvisational jazz.
PEACE groups took part in a vigil in Huddersfield as the world marked the 60th anniversary of the atom bomb being dropped on Hiroshima.
ANTI-NUCLEAR protesters gathered yesterday to mark the 60th anniversary of the atom bomb being dropped on Hiroshima.
95) tells of a physicist forced to emigrate to England when the Nazis took over--and found his pacifist nature compromised when he discovered his findings had helped the developers of the atom bomb.
From early history such as The Writing Of The Star-spangled Banner (0836834097), The Salem Witch Trials (0836834062) and The Oregon Trail (0836834054) to The Seneca Falls Women's Rights Convention (0836834089), The Scottsboro Case (0836834070) and The Atom Bomb Project (0836834046), each book provides insights into decision-making processes of the times, alternates American history with world response and overviews of the times, and provides excellent insights with easily-read text and suggested activities.