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Beginning of Paper
Nuclear Weapons Are A Threat to All
Ever since the first nuclear weapon was built in 1945, nuclear war
has been a threat. The two major nuclear powers in the world today are
the Soviet Union and the United States. If a war ever broke out between
the two, which involved the use of nuclear weapons, the whole world would
suffer f ....
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Middle of Paper
.... are two different ways to make a fission weapon: the gun-type
method and the implosion method. In the gun-type method, two pieces of
material, each having a subcritical mass, are placed at opposite ends of a
metal cylinder. One of the pieces has a powerful, nonnuclear explosive
behind it that explodes on impact and drives the piece into the one at the
other end. The atoms in the material the collide and start a chain
reaction. In the implosion method a ball of either uranium or plutonium is
surrounded by a large amount of nonnuclea ....
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