When blood is impacted, droplets are dispersed through the air. When these droplets strike a surface, the shape of the stain changes depending on the angle of impact, velocity, distance travelled and type of surface impacted. ... As the angle of impact changes, so does the appearance of the resulting stain.
When starting to notice blood is being/is already impacted, droplets are dispersed through the air. these little droplets strike a surface, the shape of the stain changes depending on the angle of impact, velocity, distance travelled and type of surface impacted
