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
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

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.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Therefore, taking into account the other political, economic and scientific-technical data mentioned above and known to the author in general terms, it is quite possible to conclude that the United States during the military period of 1942-1945, in comparison with the opposing sides-parties of the Second World War, had the most favorable chances of succeeding first in the development and creation of the first atomic bombs. American scientists and experts, as pioneers in the nuclear arms race, went the hard way: they simultaneously created two fundamentally different models of atomic bombs--<<uranium>> based on the fissile uranium isotope [92.sup.235]U and <<plutonium>> based on the fissile isotope of plutonium [94.sup.239]Pu [2- 9].
Sunao Tsuboi, the 91-year-old chairman of the Hiroshima branch of atomic bomb victims, "gripped Obama's hand and would not let go until he had spoken to him for some time," The New York Times reported.
Three days after the atomic bomb was dropped in Hiroshima, a second bomb was dropped on Nagasaki.
Nevertheless, those hibakusha, atomic bomb survivors, whose bodies were eaten away by radiation, and who continue to suffer from the aftereffects, can never forget that day.
This pilot flew both the first American bombing mission in the European Theater and the first dropping of an atomic bomb? For our readers who love nose-art, what were the names of the B-17 and B-29 flown on the two missions.
Another reason why Toge's poems have continued to be read is put forward by Masahiko Ikeda, 66, an expert on atomic bomb literature.
This book is especially interesting and beneficial when it details and assesses the combined impact of the American atomic bombs and the Soviet military actions against Japan on the peace party within the Japanese government and Japanese diplomacy.
Ursula's girls against the atomic bomb. Penguin, Plume.
This exhibit was commissioned by the Smithsonian to mark the fiftieth anniversary of the famous plane's flight which dropped the atomic bomb on Hiroshima.
In October last year the city of Coventry inaugurated a Peace Month and a Hiroshima Nagasaki Atomic Bomb Exhibition, which was officially opened by the Japanese Ambassador to the UK, Masaki Orita.
Thus, atomic bomb survivors may not be representative of populations exposed to radiation by other means (38): "As a result of these biases, atomic bomb data are not a reliable source of cancer risk coefficients, but they can still be used to study factors with immune system associations" (p.
The March 4, 1946, issue of Time lists a number of effects on human bodies by atomic bombs and notes that the Bombing Survey's findings contradict earlier comments by "military conservatives" ("What Happened" 90).