An explosive material, also called an explosive, is a reactive substance that contains a great amount of potential energy that can produce an explosion if released suddenly, usually accompanied by the production of light, heat, sound, and pressure. An explosive charge is a measured quantity of explosive material.
This potential energy stored in an explosive material may be
Explosive materials may be categorized by the speed at which they expand. Materials that detonate (the front of the chemical reaction moves faster through the material than the speed of sound) are said to be "high explosives" and materials that deflagrate are said to be "low explosives". Explosives may also be categorized by their sensitivity. Sensitive materials that can be initiated by a relatively small amount of heat or pressure are primary explosives and materials that are relatively insensitive are secondary or tertiary explosives.
POTTSVILLE — Residents who lived near the scene of an explosion in Kelayres on Dec. 21, 2021, testified in Schuylkill CountyCourt Thursday during the trial of a former Hazleton police officer accused of planting the explosive device ....
Officials say two people were badly burned and two others are believed to be dead after an explosion and fire destroyed a gas station in a small Idaho town Wednesday afternoon ....
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