What is the definition of detonation?

Detonation is defined as the rapid propagation of a combustion zone at a velocity greater than the speed of sound. This phenomenon involves a shock wave that increases the pressure and temperature in the reaction zone, leading to an explosive effect. Detonation typically occurs in high explosives where the combustion process generates a significant amount of energy very quickly, resulting in a violent explosion.

This definition is crucial in understanding the dynamics of explosive events, especially in forensic investigations of fires and explosions. Recognizing detonation is essential for determining the cause of an explosion, assessing risks, and implementing safety measures. In contrast, the other options depict combustion processes or explosions that occur at slower rates or are controlled in nature, thus differentiating them from the rapid and explosive nature of detonation.