Nuclear energy (or atomic energy) is the energy released from the nucleus of an atom through a nuclear reaction, which is consistent with Albert Einstein's mass-energy equation E=mc?, where E=energy, m=mass, and c=speed of light. Nuclear energy can be released through one of three nuclear reactions: 1, nuclear fission, heavier nuclei split to release binding energy. 2, nuclear fusion, lighter nuclei polymerize together to release binding energy. 3, nuclear decay, the spontaneous decay of atomic nuclei in the process of releasing energy.
Second, the use of nuclear energy:
1, electricity generation.
2, military arms.
3, cosmic exploration.
4, other life applications.