Pressure, Explosive
Pressure, Explosive : Explosions may be characterized by energy release apparent in effect but not cause. Depending upon their causes, explosions are of four principal kinds; energy release generated by rapid oxidation of gasoline vapor; release of energy generated by rapid decomposition such as in a dynamite explosion; release of energy caused by excessive pressure such as in a boiler explosion; and energy release created by nuclear fission of fusion, such as a hydrogen bomb explosion. A practical method of differentiating between fire and explosion is that an explosion develops forces which may cause violent displacement of structures or other objects, and indicates the presence of pressures developed by the explosion of vapors and other materials
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