Räjähdysaineisiin

Räjähdysaineisiin, commonly known as explosives, are substances or devices that can undergo rapid exothermic chemical reactions, producing a large volume of gas and a significant pressure wave. This rapid expansion of gas is what causes the explosive effect. Explosives are broadly categorized into two main types: high explosives and low explosives.

High explosives, such as dynamite and TNT, detonate, meaning they decompose extremely rapidly throughout their mass at supersonic speeds. This process creates a powerful shock wave. They are typically used in applications requiring significant force and speed, such as mining, demolition, and in military ordnance.

Low explosives, like gunpowder, deflagrate, meaning they burn very rapidly at subsonic speeds. They produce a propulsive force rather than a shattering shock wave. Low explosives are primarily used as propellants in firearms and fireworks.

The development and use of explosives have a long history, dating back to ancient China with the invention of gunpowder. Their applications have expanded significantly over centuries, playing crucial roles in construction, warfare, and scientific research. However, the inherent danger of explosives necessitates strict regulations and safety protocols for their manufacture, storage, transport, and use. Accidental or intentional misuse of explosives can lead to severe destruction and loss of life.