Blood Splatter is analyzed by using the basic laws of physics, “the size of projected bloodstain has a direct relationship to the speed at which it traveled prior to impacting on a target surface, the direction of a blood droplet was traveling prior to impact will be revealed by its appearance, and that bloodstain patterns are predictable and reproducible.”
Splatter
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Castoff
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Drip
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Low Velocity
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Medium Velocity
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High Velocity
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Information and these pictures of blood used from: http://academic.algonquincollege.com/students/calv0008/blood.html