ATOMIC ENERGY IS most important source of energy now a days as it is pollution free.There are strong forces in the nuclei of atoms which keep the particles together.In two ways to release the energy hidden in the nuclei of an atom -one is by fusion and other is by splitting them.In fusion ,they are fuse with one another ,. This also occur in core of stars.Big stars produce energy by fusion of atoms.It is also done in Hydrogen bomb.Other method is splitting atoms to release energy.This is done in Nuclear power plants.for this purpose a chain reaction is required in a reactor.In this process atoms can be split by bombarding them with neutrons for example the nucleus of a uranium atom,can be split by bombarding with neutrons .A lot of energy is released in this process. along with heat.Now a days atomic energy is used to produced electricity in atomic power plant or nuclear power plants.But it also has some disadvantage that is the danger of releasing radioactive radiation which is very harmful for human beings as well as for environment.The famous Chernobyl in Ukraine in 1986 and Fukushima nuclear accident in Japan in2011 released harm ful radiation in the air exposing people to harmful radiation.but precautions are taken to avoid any mishap
RADIOACTIVITY-
Radioactivity is a property of atomic nuclei to decay and release radiation.Many atoms split when they are bombarded with neutrons, and others decay spontaneously. In this case the the radiation of radioactive material takes place.
The radiation occurs in three forms -The alpha rays can reach only up to few centimeters .The beta rays are made of electrons resulting from the splitting of atomic nuclei .They can go up to 1 meter and are stooped by metallic foils.The gamma rays are bundled energy released in the decay and are very dangerous.Even thick lead plates can only partly stop them. They can penetrate the cells of our body and can destroy them.Thus radioactive radiation is very harmful.
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RADIOACTIVITY-
Radioactivity is a property of atomic nuclei to decay and release radiation.Many atoms split when they are bombarded with neutrons, and others decay spontaneously. In this case the the radiation of radioactive material takes place.
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