What is the definition of blast pressure?

Blast pressure refers specifically to the excess pressure created in the environment following an explosion due to detonation. When an explosive device detonates, it produces a shock wave that travels through the air, creating a sudden change in pressure. This pressure wave is often much higher than ambient atmospheric pressure and is responsible for causing damage and injuries in the vicinity of the explosion. Understanding blast pressure is crucial for evaluating the impact of explosions on structures and individuals, which is vital in emergency response and rescue operations.

The other choices relate to different concepts that do not accurately capture the specific nature of blast pressure. Ambient conditions refer to the surrounding environmental pressure, while resistance to explosive force and force dissipation over distance describe different physical phenomena not specifically related to the definition of blast pressure itself.