- A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission or a combination of fission and fusion.
- The immense destructive power of atomic weapons comes from a sudden release of energy produced by splitting the nuclei of the fissile elements making up the bombs' core.
- In August 1942, the US set up the "Manhattan Project" in order to develop the first nuclear weapon that costs the US $2 billion.
- Nuclear explosions produce immediate and delayed destructive effects. Immediate effects like shock wave and radiation are produced.
- Examples of nuclear weapons: Hydrogen bomb, Atomic bomb, Dirty bomb, Nuclear gravity bomb, Missile warheads, Artillery shells, Nuclear torpedoes, etc.