Jose John May 7, 2016 No Comments
ENERGY FROM ATOM Until World War II, the world was familiar with only mechanical, chemical, acoustic, thermal, optic, magnetic and electrical forms of energy. But on a fateful day in 1945 when the U.S. exploded atom bomb over Hiroshima, the world got aware of nuclear energy. Haw exactly is energy got from the atom? The atom is the tiniest speck of matter? Each atom has a central core called the nucleus, around which revolve the electrons. The nucleus is built up of two kinds of very minute particles called protons and neutrons. The electron has a negative electrical charge, the proton has an equal positive charge and the neutron has no charge. The nucleus of the radium atom constantly disintegrates ejecting alpha particles which are nuclei of helium atoms. This phenomenon is called radioactivity. Uranium is another radioactive element. In 1938 Hahn and Strassman bombarded uranium with neutrons and found traces of barium in the material. This led to the discovery that some of the uranium atoms capture a bombarding neutron and get split into two nearly equal parts. This splitting is called nuclear fission. At the same time two or three neutrons are set free in the reaction. These go on splitting other uranium atoms and release neutrons....
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