Hiroshima and nagasaki attack date

Source: In essence, a hydrogen bomb employs fission to fuel a fusion process, whereas an atomic bomb is solely a fission-based weapon. In other words, a hydrogen bomb is set off by an atomic bomb. To better understand this, it is probably worth giving a quick overview of each. An atomic bomb, or A-bomb for short, is a form of nuclear weapon that detonates as a result of the tremendous energy unleashed by nuclear fission. Because of this, this kind of bomb is also often referred to as a fission bomb. A material capable of fission (fissile material) is given supercritical mass, which is the point at which fission occurs — the nuclear breaks apart. This can be done by either firing one portion of a sub-critical mass into another or by compressing the sub-critical material with conventional explosives. This material usually consists of either enriched plutonium or enriched uranium. The fission reaction is incredibly powerful. Atomic bombs are measured in kilotons, with each unit equal to the explosive force of 1,000 tons of TNT. The atomic weapon which leveled Hiroshima in 1945 had a yield of around 15 kilotons; or the explosive power of 15,000 tons of TNT. A single atomic bomb can produce between around a ton and 500 kilotons of the explosive TNT. Additionally, radioactive fission fragments are released by the bomb as a result of the heavier nuclei splitting into smaller ones. When detonated, fission fragments make up the majority of nuclear fallout. Hydrogen bombs, or H-bomb...