ABSTRACT
The term passive refers to bloodstains and patterns that have been produced from freefalling drops or a volume of blood that has been subjected to the external forces of gravity, air resistance, and the nature of the surface on which the stains have formed. Passive bloodstains are distinguished from the spatter groups in that the blood has not been subjected to a significant external force or impact at its source. They comprise a diverse group of bloodstains and patterns that are commonly encountered at bloodshed events (Figure 5.1).
