>>507679718
well you see anon when a U235 atom is hit with a neutron travelling the right speed its splits into a krypton atom, a barium atom, and 3 neutrons which are able to continue the cycle, in the process a small amount of matter is converted directly into light and heat, now in a nuclear bomb you simple create conditions to cause this reaction to happen as fast as possible to generate as much energy as possible before your lump of shiny metal blows itself apart, now we can argue all day about if the second part is practically achievable but the rest of the premise is part of how nuclear reactors work