High-explosives are materials that detonate, producing a rapid release of energy and a shock wave. They are used in various applications, including military ordnance, demolition, and mining. Common types of high-explosives include TNT, RDX, and PETN, each with specific properties that make them suitable for different uses. These explosives are characterized by their ability to produce a violent explosion when initiated by a detonator. Unlike low-explosives, which burn slowly and produce gas, high-explosives react almost instantaneously. Safety measures are crucial when handling these materials, as they can be extremely dangerous if not managed properly.