The concept of atom has existed for many centuries. But in recent years, we began to understand the enormous power generated by atomic energy/nuclear energy. In the years just before and during World War II, nuclear research focused mainly on the development of defence weapons. Later, scientists concentrated on peaceful applications of nuclear technology. An important use of nuclear energy is the generation of electric energy. After years of research, scientists have successfully applied nuclear technology to many other scientific, medical, and industrial purposes.
The energy released when two atoms are made to bombarded with each other is generally called as atomic energy. Atomic energy is the source of Nuclear power, which uses sustained nuclear fission to generate heat and electricity. This energy is not only used to generate electricity but also used to create atomic bombs and in many other fields.