Blood spatter refers to the pattern of blood droplets that are created when blood is expelled from a source, often due to a violent event. The size, shape, and distribution of these droplets can provide important information about the circumstances surrounding an incident, such as the type of weapon used or the position of the victim. Forensic experts analyze blood spatter patterns to reconstruct events at a crime scene. Factors like the angle of impact, the force of the blood's release, and the surface it lands on can all influence the resulting patterns. This analysis is a crucial part of crime scene investigation.