What is a spark in the context of fire science?

In the context of fire science, a spark is defined as a moving particle of solid material that emits radiant energy. This definition highlights the nature of a spark as a small fragment that can originate from various sources, such as the friction of metal surfaces, electrical discharges, or the combustion process itself. When these particles are generated, their high temperature can lead to ignition of combustible materials in their vicinity.

Sparks play a significant role in initiating fires, particularly when they interact with flammable vapors or combustible solids. Their ability to carry heat away from their point of origin and ignite new fuel sources makes them critical factors to consider during fire investigations.

Understanding what constitutes a spark is essential for fire investigators as it aids in identifying ignition sources and determining the potential fire spread in a scenario. This is why the definition provided is accurate and aligns with fire science principles.