Answer: Atomic bomb
An atomic bomb is a device that has been used as a nuclear weapon by means of nuclear fission (separation of a heavy nucleus into lighter nuclei). It should be noted that there are also devices that work with nuclear fusion (the union of two nuclei) but until now there are no records of their use for war purposes.
This type of fission bombs release a large amount of energy (in the form of heat and radiation of all wavelengths, including dangerous ionizing radiation) by provocating a sustained chain reaction, after which convective processes (transmission of heat through the air) are produced, causing its characteristic mushroom shape with the expansive wave and destroying everything in its path.
