The nucleus of a heavy atom like uranium-235 or plutonium-239 is split in a chain reaction (fission), releasing energy. Energy from fission triggers the fusion of hydrogen isotopes, creating an even more powerful explosion. Both types rely on precise mechanisms to compress and ignite the nuclear material, resulting in a devastating release of heat, radiation, and a shockwave. Follow @thatisnewton ,All credits to respective creators/owners. DM for credits/removal | Thatis Newton