Bloodstain Pattern Analysis Terminology

Definition

Directional Angle
The angle (gamma) between the long axis of a spatter stain and a defined reference line on the target.
Bloodstain Example - Directional Angle
Bloodstain Example - Directional Angle

Description

This shows the directional angle, known as γ (gamma), which is the angle between the plumb line and the major axis of the bloodstain.