Räjähde

Räjähde is a Finnish noun referring to an explosive substance or an explosive device. In technical usage it denotes materials that release a large amount of energy rapidly, generating heat, gas, and, if confined, a shock wave. Explosives may detonate (high explosives) or burn and release energy quickly without a true detonation (low explosives). The essential characteristic is a very high rate of energy release compared to ordinary combustion, enabling fragmentation, blasting, or propulsion.

Explosives vary in sensitivity, stability, and energy content. Some are relatively stable under normal handling, while others are highly sensitive to heat, shock, or friction. They are manufactured and used in controlled applications such as mining and quarrying, construction demolition, civil engineering, aerospace, and military ordnance. Common examples include TNT, nitroglycerin (including dynamite formulations), RDX, PETN, ammonium nitrate-based explosives (such as ANFO), and composite or plastic explosives.

Safety and regulation: Räjähte are strictly regulated in most countries. Handling, storage, transport, and use typically require licenses, specialized training, and adherence to safety standards to mitigate risks of accidental detonation, environmental harm, and injury.

Etymology and usage: The term stems from the Finnish verb räjähtyä, meaning to explode, and is used to describe explosive materials and devices in everyday and technical language.