Abstract
Explosion refers to mechanical energy imparted on surrounding medium converted from rapid expansion of gas powered by the energy of the system itself due to rapid physical and chemical changes of the substance system. This release of energy is accompanied by powerful exothermic effect, light emission, sound emission, and other reactions. Explosion is a common phenomenon, such as explosion of boiler, explosion of tires of automobile or bicycle, and explosion of explosives from firecrackers to atom bomb and hydrogen bomb. With regard to the nature of explosion, the three main categories are physical explosion, chemical explosion, and nuclear explosion, all of which are capable of causing blast injury.
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