Nuclear Energy, for the Good or Bad??

As the public would perceived the world nuclear", some might see it as a threat to the human population, but some sees it a a future source of energy. Why? Because if we properly utilized the technology of nuclear power, it will create more benefits than harm. 

As previously mentioned, nuclear reaction consist of nuclear fission and nuclear fusion. Each fission produces two or three neutrons, which in turn produce new fissions and release other neutrons and so on. This is called a chain reaction. In a nuclear reactor, the chain reaction is controlled. Only one neutron is allowed to propagate and continue the reaction, the others are trapped. Thus, one fission gives rise to one fission, not two or three. 

The amount of heat released in the uranium mass is therefore completely controlled. In practice, absorbents such as boron, indium, and cadmium absorb excess neutrons and control the chain reaction. Mobile control rods are used. These can be inserted or extracted from the reactor core. If necessary, they will automatically fall into the fuel and thus stop the chain reaction almost instantly. In an atom bomb, the chain reaction is not controlled. 

All the neutrons that are being released will propagate and thus the amount of heat released in the uranium mass will be uncontrollable. This is the difference between an atom bomb and a nuclear reactor. If the chain reaction in the nuclear reactor is not controlled, then it will be a disaster!